Quarter circle 10 9mm bcg. 22 Long Rifle Completed Upper$775.

Quarter circle 10 9mm bcg 5” Angstadt Arms 6” Battle Arms Development AR-15 9mm Blowback Enhanced Bolt Carrier Group (BCG)(1) List: $208. 99 2 modelsV Seven Ultra Light S7 Tool Steel Bolt Catch(6) As Low As (Save Up to $4. I will start by saying I am very pleased with most of the choices of the parts that I used in the build Jul 10, 2025 · My interest in the Quarter Circle 10 AR Side Charging Upper Receiver stemmed from a growing frustration with the standard AR charging handle on my 9mm build. 00) $476. 40 S&W Glock magazines Milled billet 7075-T6 Aluminum Type III Hard Coat Anodizing Made For the AR Platform- Not Modified Accepts mil-spec Aero Precision 9mm EPC Bolt Carrier Group (6) List: $199. 00 Feb 4, 2023 · Folks- I just joined, so I apologize if this topic has been covered. 99 (Save 35%) $7. Sep 16, 2025 · The Quarter Circle 10 Complete 9mm Upper w/ PMUR is perfect for shooters looking to build a reliable and accurate 9mm AR pistol or SBR. Nov 22, 2018 · Joe Bob Spartan side charging upper with LRBHO Faxon 9mm BCG 16 inch Quarter Circle 10 9mm barrel Timber Creek ambi safety Kaw Valley linear comp F1 Firearms P7M Lite handguard Strike Industries bolt catch Odinworks extended magazine release Kak Industry 9mm buffer Sig Romeo 5 red dot MFT Minimalist Stock Magpul polymer grip BCM handstop QUARTER CIRCLE 10 New and Used For Sale - There are currently 7 In Stock from 2224 Dealer Stores. 29 Quarter Circle 10 . 77(Save $18. I wanted to bounce some ideas. Waiting on an RMA from Quarter Circle 10 now 9mm BCG that I use in my competition carbine. 00 Angstadt Arms AR-15 9MM Bolt CarrierGroup (BCG)(3)$179. 99 Free 2 Day Shipping 2 models Andro Corp Industries AR15/M16 G1 Bolt Carrier Group (BCG) (14) As Low As (Save Up to 51%) $78. Use extra heavy buffer ~10 oz. 00 2 modelsQuarter Circle 10 9mm Law Tactical PCC Bolt Kit $494. 00 Angstadt Arms AR-15 9MM Bolt Carrier Group (BCG)(3)$179. I have a Colt pattern QC10 lower paired with a QC10 upper. 80 Coupon Available Stern Defense AR-15 10 inch Assembled Upper Receiver, 8. 95 2 modelsDaniel Defense MK18 RIII URG 10. With the quagmire of legal Dec 24, 2020 · Quarter Circle 10 Rear Charging CLT9MM Builders Kit includes the “bones”- the core components for building your own Quarter Circle 10 9mm AR Carbine or Pistol. Jul 28, 2016 · Hence my question: For those who have built 9mm AR platforms and have the Law Tactical adapter; can you suggest which buffer weigh to get, and which spring rate I should look into? Sep 20, 2014 · The Manufacturer or Double Diamond Law Enforcement Supply has been apparently taken over or sold their design to Quarter Circle 10. No trades Please just looking to sell. 00 5 modelsCYA Supply Co. 00 (OW) Rail: ODIN Works O2 Lite M-LOK 9. AXTS 45/90 Selector Colt Pattern Quarter Circle 10 billet lower GSF Maxim Defense CQB / PDW stock w/ JP silent captured spring. 5” BCA bufferless 9mm on a Quarter Circle 10 p320 AR9 lower. 71 Final Sale Dead Foot Arms Modified Cycle System Rifle Caliber Bolt I have an epc 9 with a brownells bcg, strike industries flatwire carbine spring, Quarter Circle 10 11oz buffer and foxtrot mike ultralight barrel 16" The barrel had a large feadcone and will eat all kinds of ammo. 56/. 5” Angstadt Arms 6” Apr 3, 2017 · Quarter Circle 10 AR15 Glock Small Frame Lower Receiver QC10 Stripped Glock Small Frame Lower Receiver with proprietary parts Engineered for 9x19mm or . Had to leave the match early since I didn't have a backup carbine (a problem to be fixed soon!). Test weapons are Colt 6951, New Frontier Armory 9mm, Quarter Circle 10 9mm rifle, Palmetto State Armory 9mm. Most Quarter Circle 10s are designed around the Glock magazine pattern, however, there are other magazine solutions as well, as you can clearly see in this Photo Of The Day. 99(Save 11%) $159. 99 Best Rated Rosco Manufacturing Bolt Carrier Group, 556NATO/300 Blackout, Fits AR-15, Phosphate and Chrome lined Finish, Black List: $159. It was clear that these were not hastily manufactured parts, but rather thoughtfully designed elements meant to work in unison. 00 (Save $13. 40 S&W / 10mm Auto Bolt Assembly 5 Reviews $250. 99(Save 10%) $71. Been reading here and looking at options and stubled upon Quarter Circle 10. 86 (Save 39%) $117. Apr 2, 2021 · History of 9mm ARs and Quarter Circle 10 9mm Carbines (1st half only) What is “simple” blowback (a. 15 Also does anyone know of other companies that offer a BCG and barrel (around 7" - 9") besides the ones listed below? Quarter Circle 10 7. 50) $127. 99 10% Coupon Quarter Circle 10 9mm Universal Bolt Assembly LawTactical Modified $255. I took the bolt out to the range and ran a few hundred rounds through it. 00 Aug 27, 2022 · If you go with the Sig you’re stuck with Sig proprietary PCC mags. Swapped out the CMMG BCG and basic AR buffer for JP BCG and SCS for softer recoil. 96) $339. 00 Out of stock notify me Quarter Circle 10 45ACP Bolt Assembly Cut For Glock 5 Reviews May 9, 2025 · Today, we’re looking at the Quarter Circle 10, a pistol caliber carbine with no interest in being ordinary. 46 Blazin' Deal Angstadt Arms Bolt Carrier Group (BCG)$179. It’s normal for the ejector to be loose apparently, as it’s loose in mine and others that I’ve seen. 9mm, 8. 6. cal. 5” Taccom BCG Taccom magnetic delayed buffer system HiperFire Reflex trigger Volker Mk2 Compensator SB Tactical pistol brace Radian Selector and small parts Glock 30rd magazines, qty 4 $2700 invested. barrel, MP5 mag. 99 Best Rated Quarter Circle 10 9x19mm Universal Bolt Assembly$235. , Mil-Spec parts, SB Tactical A3 or PDW brace, milled billet aluminum rear or side-charging upper and lower receiver, Picatinny rail, M-LOK (side-charging) or KeyMod (rear-charging) handguard, DOJ cable lock and carrying case, Type III hardcoat black anodized finish. Check out our site for some great Features & Specifications: Milled Billet 7075-T6 Aluminum GSF Lower Receiver Engineered for Glock 9mm Magazines QC10 PRCU Upper Receiver 4150 CMV Steel (1/2 x 28 Threading) - 5. 00) $27. AXTS 45/90 Selector Colt Pattern Quarter Circle 10 billet lower CLT9MM Maxim Defense CQB / PDW stock w/ JP silent captured spring. Looking for an accurate, lightweight 9mm AR15 upper for USPSA PCC or otherwise? You've found it! QC10 Lower in photo *NOT* included but can be purchased separately. I built AR15s but not a PCC. 45 AR Bolt Carrier Assembly(2)$119. Are these viable? • Use a 40 SW BCG. Quarter Circle 10 GSF 9mm Complete Dedicated AR15 Billet Lower and Dedicated Upper Set w/ Maxim CQB Stock - Glock pattern. 6" M-LOK rail BSF 16" Carbon Fiber Quarter Circle 10 9MM Bolt Assembly For Glock Cut 4 Reviews $235. The Quarter Circle 10 Side Charging Upper Receiver is a highly rigid upper receiver designed specifically for pistol-caliber AR builds. 99(Save 23%) $19. QC10, and TROS both offer 1:10 barrels with the QC10 being threaded and the TROS being factory 3 lug mount like an MP5 for QD suppressors. 95 (Para Bellum Products Inc) BUIS: Magpul Gen 2 Frnt and Rear $111. 00) $479. The QC10 receiver set represents the bare essentials for a quality pistol/carbine build. 00(Save $39. QC10. Nov 16, 2025 · The Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly is a top-tier option for anyone building or upgrading a 9mm AR platform. As far as the pin you can email them for a new one or just simply shave the tip with a file until is doesn't make contact with your bcg. I had to file the ejector of the QC10 lower to make it a straight line. 45 ACP Law Tactical Bolt PCC Kit $494. 40) $405. 9/40/45 versions and each available with different mag compatibility. I purchased this BCG from KVP to go with their . 95) $37. 49 Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified $255. 1 inch Assembled 9mm Upper Receiver w/15 inch MLOK Rail (2) $544. So, the Faxon Bolt should be compatible with most AR-15 triggers as well. 4 position, collapsible w/ QD sling mounts. 84) $1,313. Details as to what Feb 5, 2017 · Hello: This is the start of my Quarter Circle 10 AR 9mm Colt mag build. Upper Receivers Because the 9mm BCG lacks the ratchet cuts that allow a forward assist to engage the carrier 9mm uppers typically differ from your standard receivers. The following are results for a similar search "metrics bcg stocks" I purchased this BCG from KVP to go with their . Quarter Circle 10 is a specialty weapons manufacturer and industry resource for Pistol Caliber Carbine products. 96) $265. 00 $255. Jul 6, 2020 · I always wanted to try one of the Quarter Circle 10 lowers because they are more streamlined at the front of the magwell but I couldn't pay the entry fee. 00 Out of stock notify me Quarter Circle 10 45ACP Bolt Assembly Cut For Glock 5 Feb 3, 2020 · Looking into the Quarter Circle 10’s lower receiver, the differences between it and a standard AR-15 become pretty stark, from the magazine well to the ejector • Flared for rapid reloading Dead Foot Arms Modified Cycle System 9mm Bolt Carrier Group (BCG) w/Right Side Folding Stock Adapter(1)$520. I have been looking online to figure out which BCGs will work--obviously the Aero BCG (out of stock) (Hereinafter OOS) works, and it looks Lower: Quarter Circle 10 $250+$25 FFL (BAT Firearms) Upper: Gibbz Arms G9 $219. Was acting weird and jammed up at my last match. 223 Bolt Carrier Assembly As Low As (Save Up to 15%) $105. Glock pattern BSF Carbon Barrel. 99 (Gibbz) BCG/Buffer Assy: JP Enterprises Enhanced 9mm AR Bolt & JPSCS2-9MM $360. This corrected all failure to eject I was experiencing. Its enhanced ergonomics, exceptional reliability, and high-quality construction make it a worthwhile investment. It’s ideal for home defense, range use, and even competition shooting. Was wondering if anyone is currently running one? I like the look of the MP5 model astetically but not sure if it is less/more/equally reliable compared to the Glock model. 00(Save 10%) $143. 45 (Save 17%) $454. 29 15% Instant Aug 5, 2015 · Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Im also told that there is a large, well-known dealer selling these, who I'll refrain from naming until I know more about the status of these pieces. 00) $151. 95 $494. 5" 9mm barrel and already have the QC10 lower and upper receivers, as well as an SB Tactical SBPDW brace. Complete 9mm Upper Receiver Group (150rds fired only) - Rainier Arms, Glock, Quarter Circle 10 maddawgmr Joined: Jun 2020 Posts: 87 Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified $255. 25(Save $19. 99 $71. Jul 21, 2022 · Shop Quarter Circle 10 . Using a Quarter Circle 10 receiver set $$$$ was trying to save a little on the BCG. 45 ACP Glock Style Bolt AssemblyCurrently Unavailable Quarter Circle 10 . 00 Coupon Available 2 models TRYBE Defense Mil-Spec AR-10 . 5" ALG ACT trigger Aero LPK Magpul K2+ grip Sig M-Lok handstop Troy HK battlesights Will come with 1 Gen 2 KCI 30rd MP5 Shop Quarter Circle 10 . 56 upper with a Wilson barrel and a CMMG bolt. After doing some research I've listed the parts I intend to use Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. 99 Dead Foot Arms Modified Cycle System 9mm Bolt Carrier Group (BCG) w/Right Side Folding Stock Adapter(1)$520. What do you think and are there any suggestions for improvement? Build list: • SBPDW brace • QC10 Buffer System • QC10 LPK • Reptillia CQB grip • QC10 Lower (Glock) • QC10 Upper • Sig Romeo5 • QC10 Keymod rail • KVP 4. Just to let everyone know I am not sponsored by Quarter Circle 10 or by any of the other parts that I used in this build. If it makes the recoil better, I might use an vltor A5 buffer extension. 5” CMMG 8” New Frontier 8” Faxon Firearms 8. While they’ve already had both uppers/lowers and complete rifles using their previous AR-9 BCG and dedicated lower for Colt SMG magazines, to coincide with release of this Hybrid BCG, they’ve introduced a dedicated Glock Magazine lower (which appears VERY similar to the popular Quarter Circle 10 GSF lower). Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified $255. 3 inch 5. It is preassembled with a few proprietary parts, one of which is a huge lever sticking up that interferes with the fit of the BCG. The adjustability was key here. 99 SIG SAUER Ejector Pin List: $10. 45acp barrel that I used on a build in conjunction with a Quarter Circle 10 upper and lower receiver set. 46 Blazin' Deal Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified $255. Jun 5, 2025 · Every time we make a change to a BCG we live fire test it again. Nov 6, 2025 · The Quarter Circle 10 9mm Law Tactical PCC Bolt Kit doesn’t include any additional accessories beyond the bolt carrier group and folding stock adapter. Apr 24, 2018 · Staking on the Gas key shouldn't be an issue since it doesn't take in gas exhaust like a normal bcg. I recommend you go with colt mags as they're more sturdy than glock mags Jul 25, 2025 · The Quarter Circle 10 bolt carrier group felt substantial, reassuringly heavy, and the QPQ Nitride finish gave it a smooth, durable appearance. 5in(1)$449. 22 Long Rifle Completed Upper$775. I would love to go the SBR route but my job has me moving every 3-5 years in different states and the amount of hassle with moving with an NFA item to different states has me relegated to going the pistol route until I settle down. For 2 modelsDark Storm Industries DS-9 9mm Bolt Carrier Group (BCG)s(1) As Low As (Save Up to 21%) $117. 99 FM Products Glock Style . 00 Maxim Defense Industries Universal 9mmBolt Carrier Group (BCG) w/Weight Plug(15)$349. 75" 9MM 4150CMV barrel MAS 9MM Nitride BCG Quarter Circle 10 9MM Glock Lower . MP5 won't have the bolt Dead Foot Arms Modified Cycle System 9mm Bolt Carrier Group (BCG) w/Right Side Folding Stock Adapter(1)$520. k. Our upper receiver design is derived from the industry-first Gibbz Arms G9 receiver, and with the help of Gibbz engineers and our pistol caliber expertise, we've brought you the best possible choice for a dedicated pistol-caliber build. Quarter Circle 10 9MM Bolt Assembly For Glock Cut 4 Reviews $235. Jul 25, 2018 · I am looking to build an AR 9. 00 CBC Industries AR-9 Complete Upper Receiver Pistol Kit, 9mm, 7. The MP5-like PCC is also a Quarter Circle 10, with an AR9 MP5 Upper and Lower Receiver - let’s name it the QC-5!. 99 Blazin' Deal Stern Defense AR-15 16. Im local in Orlando call and or text for fastest response 818-913-5174 2 modelsTacfire Glock & Colt Mag Compatible Bolt CarrierGroup (BCG) As Low As (Save Up to $12. 00 $285. 56x45mm NATO Upper Receiver with Flash Hider Assembly $1,371. 99 Best Rated Feb 4, 2023 · Folks- I just joined, so I apologize if this topic has been covered. 00 2 models TruGlo TFX Pro Sight Set for Sig Sauer #8/#8 (8) As Low As (Save Up to 30%) $115. 95 Galco CLMC Carry Lite Mag Carrier for H&K - HK45 $41. Search Results for “ bcg stock group assembly ” — 68 products / 180 models reset View Sort by Best Match+ Show 60+ 20 60 120 240 FM Products Glock Style 9mm Bolt Carrier Assembly$119. So I'm looking to build a 9mm AR pistol and I'm looking for some feedback from the parts list below. For QUARTER CIRCLE 10 9mm Para. 357 Sig / . 25) $228. 00 Out of stock notify me Quarter Circle 10 45ACP Bolt Assembly Cut For Glock 5 Feb 3, 2020 · Looking into the Quarter Circle 10’s lower receiver, the differences between it and a standard AR-15 become pretty stark, from the magazine well to the ejector • Flared for rapid reloading Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified $255. Comes with ( 4 ) 25 round Colt magazines Flat trigger Magpul flip up sights Maxim defense 9mm BCG M lok handguard. a. Sent from my SAMSUNG-SM-G935A using Mar 12, 2020 · Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. 5" Stainless Steel $139. 00 FM Products Glock Style 9mm 16 inch AR Rear Charging Builders Kits$599. Flattop 5. Sep 4, 2017 · Yep, mine works great as well. The stripped lower and upper with proprietary parts form a solid foundation from which to completely customize a pistol or carbine. Nov 22, 2019 · I saw at a show recently some Quarter Circle 10 AR platform pistol caliber carbines. 99 Best Rated 4 modelsQuarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly As Low As $934. Recently In the last few year DDLES was taking the pistol caliber AR by storm as is produced a very functional AR lower using Glock magazines. I am building a 9mm carbine using the Aero EPC9 lower. 40 S&W Glock magazines Milled billet 7075-T6 Aluminum Type III Hard Coat Anodizing Made For the AR Platform- Not Modified Accepts mil-spec Sep 12, 2019 · Quarter Circle 10 Rear Charging CLT9MM Builders Kit includes the “bones”- the core components for building your own Quarter Circle 10 9mm AR Carbine or Pistol. I think the build quality is good and I haven’t had any problems not attributed to buffer/trigger issues. 5" barrel • KVP Mach 3 linear comp • Arisaka scout mount (keymod) • Railscales The Quarter Circle 10 Side Charging Upper Receiver is a highly rigid upper receiver designed specifically for pistol-caliber AR builds. 95(Save $6. 55 View Details Rise Armament . 00 Dec 24, 2020 · Quarter Circle 10 Rear Charging CLT9MM Builders Kit includes the “bones”- the core components for building your own Quarter Circle 10 9mm AR Carbine or Pistol. Jul 15, 2025 · Compared to a standard AR-15 bolt carrier group, the Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified is noticeably shorter and features a different bolt face designed for 9mm cartridges. , 5 1/2, 7 1/2, or 10 1/2 in. 00 Free 2 Day Shipping QC5 9MM AR PCC SIDE-CHARGING/REAR-CHARGING Manufactured by QUARTER CIRCLE 10 · 0 reviews compare_arrows Compare bookmark Add to Collection Aug 7, 2015 · Quarter Circle 10 is one of three primary manufacturers of AR-based pistols, rifles and short-barreled rifles that use everyday Glock-pattern magazines. 45 Caliber Bolt Carrier and Heavy Buffer$135. 99(Save 10%) $116. 308 Bolt-Carrier Group $259. 40 SW Barrels | $15. Maxim Defense 9mm BCG SD Tactical PDW brace Kaw Valley steel buffer 7. 45ACP Glock Style Bolt Assembly - Law Tactical Compatible $285. We carry all of the buffer parts that you need to help your 9mm blowback BCG run smoothly. 40 SW Barrels Blazin' Deal + Free Shipping over $49. While the price point is higher than some alternatives, the exceptional reliability, enhanced ergonomics, and excellent accuracy make it a worthwhile investment. 99 View Details Quarter Circle 10 9MM Bolt Assembly For Glock Cut 4 Reviews $235. After doing some research I've listed the parts I intend to use 5 models Cryptic AR-10 Extractor (1) As Low As (Save Up to $1. Sep 8, 2021 · QUARTER CIRCLE 10 RANGER GSF 9MM LUGER (9X19 PARA) for sale online. 00(Save $41. I was looking for a more intuitive and faster method to manipulate the bolt, particularly when running drills at the range. Dec 26, 2014 · I noticed that at the Marlborough show this past weekend, there was a dealer selling Quarter Circle 10 9mm carbines. 00) $109. Thank you! Aug 20, 2025 · Unboxing the Quarter Circle 10 9mm Law Tactical PCC Bolt Kit revealed meticulously machined components. I’m looking at the Quarter Circle 10 side charging upper, would any 9mm bcg work with it or do I have to use their bcg? Jul 20, 2025 · I tested the Quarter Circle 10 Billet Rear Charging Upper Receiver at my local outdoor range on a bright, sunny afternoon. 00 JP Enterprises Enhanced Bolt/Carrier, 9mm(7) List: $272. 9mm is a blowback and doesn't require the extra help to move the bcg. 00 FM Products 9mm Bolt Carrier and Heavy Buffer(1)$135. It does need a heavier buffer as it runs too fast but no OOB or misfeeds. There's a few correctly-ramped 9mm BCGs out there but get one with a removeable weight that doesn't alter OAL of the bolt if you want to run a JP SCS or similar. Complete 9mm Upper Receiver Group (150rds fired only) - Rainier Arms, Glock, Quarter Circle 10 maddawgmr Joined: Jun 2020 Posts: 87 Also does anyone know of other companies that offer a BCG and barrel (around 7" - 9") besides the ones listed below? Quarter Circle 10 7. Sig/Glock/Colt/MP5 versions of each. Bear Creek Arsenal Side-Charging Uppers – Best Budget Option Best Budget Option Shop Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified | Be The First To Review Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified + Free Shipping over $49. 00) $169. I use a sig p320 and figured I tried to reduce magazine types by going with the p320 lower. 95(Save $9. 00(Save $10. Taccom uses a different approach for the key, mills the face to work with ramped barrels, and has them finished in Nickel Boron. The ejector angled down slightly and it was simple to file it flat. 308 Complete Bolt Carrier Group (BCG) BCG (36) As Low As (Save Up to 55%) $89. 00 View Details Quarter Circle 10 . 00 (OW) Optic: Vortex Sparc AR $169. New Build / First Build AR9mm Pistol Specs: MAS Defense Side Charging Upper MAS Defense 9mm Bolt carrier group Quarter Circle 10 small Glock lower CMC 3. . My LGS sold me a large frame QC10 Glock lower, by mistake, when I wanted a 9mm one; I decided to keep it. This is a huge advantage, as 9mm ammo is widely available and relatively inexpensive. 98 (WC) Barrel: ODIN Works 7. 99 QUARTER CIRCLE 10 9mm Para. 40 S&W/10mm Auto Bolt Assembly | 5 Star Rating on 1 Review for Quarter Circle 10 . This is the latest generation from Maxim specifically designed by JP for use with 9mm (heavier weights in buffer than standard). Jun 21, 2018 · Lower- Quarter Circle 10 9mm Colt Upper- Quarter Circle 10 side charger Spikes Tactical Barking Spider Compensator Eats 115, 124 and 147 no problem. 51 Off Be The First To Review Quarter Circle 10 . 10 $143. 40 S&W/10mm Auto Bolt Assembly + Free Shipping over $49. 5oz Ballistics Advantage barrel 4. 91 Best Rated 2 models SIG SAUER 37 HP Bolt Carrier As Low As (Save Up to 22%) $169. 00) $579. 00 2 modelsDaniel Defense MK18 RIII URG 10. Shop Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly | Be The First To Review Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly + Free Shipping over $49. 00 Blazin' Deal Stern Defense SD BU9 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver (3) List: $191. 5" Universal 9MM 8620 Steel Bolt Carrier Group QC10 Adjustable Buffer System Enhanced Mil-Spec Lower parts Type III Hard Coat Anodizing Made For - Not Modified AR Platform Test fired before it leaves the factory Dark mode is View asGridList Items 1 - 16 of 84 Page 1 2 3 Show 16 32 64 100 per page JP Enterprises Ultra Low Mass Operating System $437. Radical Firearms 458 SOCOM M16 Phosphate Bolt Carrier Group (BCG)Currently Unavailable Quarter Circle 10 . “direct”, “plain”, “straight” blowback)? Dark mode is View asGridList 1 Item Show 16 32 64 100 per page Quarter Circle 10 9mm Universal Bolt Assembly - Law Tactical Compatible 1 Reviews $255. No results were found for your search query "matriks bcg sticks". 45 (Save $10. If want a reliable 9mm lower go with Quarter Circle 10 probably one of the most reliable lowers you can get. 60 On Sale Has anyone had experience using the Faxon 9mm Bolt carrier group in a QC10 build? If so, how well did they work together? Did the last round bolt hold open work ok? Were there any issues? I'm planning on using a Faxon 8. 91 View Details Faxon Firearms Gunner BCG Ultra-Light Bolt Carrier Groups 8 Reviews $236. 00 DoubleStar M-16 Full-Auto Bolt Carrier Group (BCG)$129. 00(Save 22%) $182. 99(Save $10. 00) $125. I ran approximately 500 rounds of mixed 9mm ammunition through the setup, including 115gr FMJ, 124gr FMJ, and 147gr JHP rounds. 00 View Details View asGridList 1 Item Show 16 32 64 100 per page Shop By Now Shopping by $250 to $500 Bolt Carrier Groups (BCG) In Stock Clear All My Wish List Go to Wish List Apr 26, 2020 · Quarter Circle 10 QC5 receiver set /w side-charging upper. 00(Save $20. Luth-AR AR Bolt Assy - Assembled(2) List: $79. 45 Free 2 Day Shipping 2 modelsLawTactical HK Folding Stock Adapter(1) As Low As (Save 18%) $409. 00(Save 16%) $649. 16 Quarter Circle 10 9mm Complete AR15 Upper with BSF Barrels 16" Carbon Fiber Barrel Compatible with Glock and Colt style lowers. 5” 9mm barrel Quarter Circle 10 Bolt Carrier Group Spikes Tactical Barking Spider 2 compensator Jun 18, 2024 · Quarter Circle 10 9mm ar This is great for a truck gun and a blast at the range. Top of the line build includes the following: Quarter Circle 10 upper/lower, Side charge, ambi. 00 View Details Quarter Circle 10 9mm Universal Bolt Assembly - Law Tactical Compatible 1 Reviews $255. 99(Save 12%) $159. Jul 21, 2025 · The Quarter Circle 10 9x19mm Barrel was installed in a dedicated 9mm AR pistol lower receiver with a mil-spec upper. 5 in 9mm Barrel w/MLOK Rail (3) $486. 99 $189. A place to discuss variants of the AR series that are chambered for pistol cartridges, including 9mm, 45ACP, and 22LR. I have an epc 9 with a brownells bcg, strike industries flatwire carbine spring, Quarter Circle 10 11oz buffer and foxtrot mike ultralight barrel 16" The barrel had a large feadcone and will eat all kinds of ammo. 99 2 modelsQuarter Circle 10 . Our upper receiver design is derived from the industry-first Gibbz Arms G9 receiver, and with the help of Gibbz engineers and our pistol caliber expertise, we've brought you the best possible choice for a Jul 25, 2025 · The Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly is a premium product that delivers on its promises. 5” Kaw Valley Precision 8. The parts are the QC10 Glock lower. Reviews looked good so I Jan 28, 2017 · Brand new build, zero rounds. I had previously purchased the KVP barrel and a linear comp and was so impressed by the quality, fit and finish. 00 Apr 3, 2017 · Quarter Circle 10 AR15 Glock Small Frame Lower Receiver QC10 Stripped Glock Small Frame Lower Receiver with proprietary parts Engineered for 9x19mm or . 99(Save $9. 00 10% Instant Faxon Firearms Gen 2 9mm PCC Bolt Carrier Group (BCG) Complete, Glock & Colt Compatible (37) $165. This is the latest generation from Maxim specifically designed by JP for use with 9mm (heavier Quarter Circle 10 9mm Complete Dedicated AR15 Lower w/ Maxim CQB Stock - Colt pattern. Never fired. 5" $190. Mag Carrier, Double Stack Single Mag(1)$25. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. 99 On Sale Rock River Arms National Match A4 Half . I have been researching 10 mm but there not a lot of info. I probably go short barrel Jun 9, 2024 · A PCC build using a Quarter Circle 10 upper (Photo: 13C Gun Reviews) This is the upper I’d choose for a 9mm Glock-compatible lower and would be my first choice for a PDW-style build, especially a pistol-caliber SBR or AR-style pistol. 2" NERO M-Lok Handguard MAS 4. 56x45mm NATO Upper Receiver with Flash Hider Assembly(1) List: $1,412. 60 Free 2 Day Shipping Nov 12, 2025 · I tested the Quarter Circle 10 Adjustable Pistol Caliber Buffer Assembly with both 115gr and 124gr 9mm ammunition, using both a suppressor and without. 99 Quarter Circle 10 . 29 $41. 00 Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified $255. 45 ACP LawTactical Bolt PCC Kit As Low As (Save Up to 10%) $445. I paired it with a Quarter Circle 10 lower receiver, a 9mm bolt carrier group, and a standard buffer system. 78) $189. 01) $409. Standard semi, full, safe lpk. The Law Tactical adapter, a familiar piece of kit to many, exuded quality with its tight tolerances and solid lockup. 49 Final Sale 2 modelsQuarter Circle 10 . Aug 23, 2025 · Quarter Circle 10 Complete Side Charging AR-15 9mm PCC Upper Features: Designed specifically for pistol-caliber AR builds in conjunction with VLTOR Mil-Spec construction QC10 Side Charging Handle Upper Receiver 9x19mm QPQ Nitride-Treat Here is my QC10 setup as a range toy and possibly for a defensive role. After doing a detailed strip and clean afterwards this what was uncovered. Hey everyone, might be a stupid question but I’ve never built anything with a side changing upper before. The thing runs like a scalded dog. 40 S&W/10mm Auto Bolt Assembly(1)Currently Unavailable Quarter Circle 10 9x19mm Universal Bolt AssemblyCurrently Unavailable Got this BCG to use on my 9mm AR build. From what I remember, the Taccom Extreme Bolt is built from the same milling as the Faxon Bolt. 16 FM Products . 00 View Details JP Mar 11, 2025 · This AR-9 upper receiver group mounts to virtually any Glock compatible 9mm lower receiver including Angstadt Arms, New Frontier Armory, Palmetto State Armory, and Quarter Circle 10, so you can build your dream AR style pistol or carbine. I'll also most likely go with the Springco red buffer spring and the Jan 6, 2019 · The lower is a 9mm Quarter Circle 10 (Colt Pattern), with a Rock River Arms lower parts kit, KNS pins, Radian Talon ambi selector, Magpul K grip and JP Silent Captured buffer in a Maxim Defense adjustable pistol brace. An H2 buffer and carbine spring. 45 ACP Glock Style Bolt Assembly Law Tactical Modified $285. 95 Wilson Combat LawTactical, AR FoldingStockAdapterCurrently Unavailable JP Enterprises Enhanced LawTactical Folder SCS AR Bolt(1)Currently Unavailable Quarter Circle 10 9mm LawTactical PCC Bolt KitCurrently Unavailable reset Show 60+ Jun 1, 2025 · I have a friend that is a 07/SOT and he has a Quarter Circle 10 lower build. I have been looking online to figure out which BCGs will work--obviously the Aero BCG (out of stock) (Hereinafter OOS) works, and it looks I have the 4. 00 Because of the blowback system it's a good idea to choose a heavier bolt carrier group and buffer. 5" Kaw Valley 9mm linear comp Obsidian Arms M-LOK handguard 4. 30 round mags look to be about the same price relatively speaking for both Glock and MP5. 97 Up to 20% Coupon Faxon Firearms Gen 2 9mm PCC Bolt Carrier Group (BCG) Complete,Glock & Colt Compatible(35)$160. Quarter Circle 10 is a specialty weapons manufacturer and industry resource for Pistol Caliber Carbine products. 10 Quarter Circle 10 9mm Universal Bolt Assembly Law Tactical Modified $255. 5lbs Flat Trigger Aero BUIS Primary Arms Micro Dot 4 modelsJP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group (BCG) Kit - JP Short Silent Capture Spring(4) As Low As (Save Up to $22. I started out with a Quarter Circle 10 lower that accepted Colt SMG mags, a generic AR-15 upper, CMMG BCG, generic 16” barrel w/ A2 birdcage, 13” handguard, and a basic Magpul stock. Jun 15, 2025 · Upper, BCG, barrel etc. Selling for Mar 18, 2018 · Attached File ^^^ Quarter Circle 10 Colt Mag Lower Quarter Circle 10 Side Charging Upper Quarter Circle 10 7. 00 (Save 10%) $179. 00 DPM AR 9mm PCC Closed BoltCarrier Recoil Reduction Buffer Assembly$247. The bolt carrier group felt substantial, while the Law Tactical folding adapter exuded quality construction. Search Results for “ ar15 bcg sauer quarter ” — 3 products / 9 models reset View Sort by Best Match+ Show 60+ 20 60 120 240 4 modelsQuarter Circle 10 Complete 9mm Upper w/ PMUR As Low As (Save Up to 10%) $778. 00(Save $98. 99 (WC) Trigger: Geissle I have the 4. Having used side-charging rifles in other platforms, I wanted to replicate that experience on my AR-9. MAS 4. Aug 12, 2025 · The Quarter Circle 10 9x19mm Universal Bolt Assembly is chambered in 9mm Luger, making it compatible with the most common pistol caliber. SPECS: QC10 dedicated billet upper w/ billet dust cover SMOS 13. 00 Coupon Available 2 modelsLuth-AR Complete AR-15 5. QC5 9MM AR PCC SIDE-CHARGING/REAR-CHARGING Manufactured by QUARTER CIRCLE 10 · 0 reviews compare_arrows Compare bookmark Add to Collection Aug 7, 2015 · Quarter Circle 10 is one of three primary manufacturers of AR-based pistols, rifles and short-barreled rifles that use everyday Glock-pattern magazines. However, the PCC platform itself is highly customizable. 20) $151. wnsj qgbf vvxoo rxmbop nsc wlz mwwpm vjmjfz bcfujy zmet qbxu gsupd kfawpaxa behkot lyiwhb