BCGs / Buffers

Replacement Firing Pin Spring for JP 9mm Bolt (JPBC-9MMA) This firing pin spring is compatible only with the JP 9mm Bolt and firing pin and should not be used with any other bolt assembly.

Molded polymer cover fits in the underside of a disassembled AR-15 .22 conversion upper receiver to prevent the bolt from falling out and keep dirt and debris out of internal components. Can be installed on any standard...

Low-friction Delrin disk fits on the end of the buffer spring, opposite the buffer, and stops the annoying "twang" of the buffer hitting the rear of the receiver extension during recoil.

We take a mil spec extractor, and polish the leading surface so that you are assured smooth function. We’ve found that this single operation is an important process to help with feeding the round into the chamber while...

Replacement Firing Pin for JP 9mm Bolt (JPBC-9MMA) This firing pin is compatible only with the JP 9mm Bolt and should not be used with any other bolt assembly.

An extra firing pin is a perfect addition for your range bag. If you are a recreational shooter, or a competitor in USPSA PCC Class shoots don't let your range day or competition end early. We rarely have firing pins break...

This firing pin is hands down, going to be your best chance as a “non-breakable” firing pin. We chose to use 17-4 stainless steel because it’s stronger and tougher than s7 tools steel; which is the common...

This spacer allows a Carbine or 9mm buffer or Silent Captured Spring to fit and function in a rifle-length buffer tube.

Designed for the AR15 Rifle or Carbine Buffer tubes, our UL Recoil System works with standard weight or Light Weight STEEL* carriers and adjustable gas blocks**. Drop in assembly, replaces your current buffer.....no...

We’ve assembled the critical parts into one kit that you will want to have in your range bag during competition ‘just in case’. You get our firing pin and return spring, our enhanced mil spec extractor;...

Designed for the AR15 Rifle or Carbine Buffer tubes, our UL Recoil System works with standard weight or Light Weight STEEL* carriers and adjustable gas blocks**. Drop in assembly, replaces your current buffer.....no...

JP Low Mass Buffer for AR-15-type rifles. Recommended for use with JP Low Mass Carriers or any other conventional mil-spec carrier where reduced mass is desired. Requires full-length extension tube. Not for use with...

Uses the proven standard mil spec 5.56 pivoting extractor for long service use. Black Nitride will give a low drag finish and easy to clean. Removable carrier weight, to work with JP recoil systems. Correct geometry for...

The latest edition JP EnhancedBolt™ is made from SAE 9310 high-grade steel. This material makes for an extremely hard surface with a tough, ductile core resistant to structural failure and a life expectancy far...

Silent Captured Spring for AR-15-type rifles Includes spacer to allow for installation in both carbine-length and rifle-length buffer tubes. Compatibility: The JPSCS-AR15 will not function with the Primary Weapon Systems...

The Kaw Valley Precision 9mm BCG is a feature packed solution for your 9mm Blow Back Carbine or Pistol. Our 9mm BCG is compatible with either Glock or Colt style magazines. The carrier is constructed of US made 8620...

14.92 OZ Pivoting Extractor (M16 Style) Designed for use with Glock and Colt Magazines Optimized for maximum performance and reliability High Polish Nitride...

The ODIN Works 9mm BCG is designed to work with both Colt and Glock style lowers and magazines. It also features the traditional style AR extractor that will give you long and reliable use. Technical Specs Works with...

Silent Captured Spring (patented) 9mm AR Version The 9mm Silent Captured Spring provides the same improvements of smoother operation and reduced cycling noise as our gas gun models. Compatibility The 9mm SCS requires...

Purpose-built for 9mm AR-15 pistol caliber carbines, our Generation 2 PCC blow-back carriers keep the features of our well-loved first BCG with modern improvements.  We maintain the dual COLT/GLOCK compatible geometry,...

Made in the USA Made from our highest quality 7075 aluminum alloy Proprietary Coating MPT bolt 5.86 OZ Steel cam pin and gas key Anti-Tilt System We recommend using an adjustable gas block for the optimal...

The TACCOM extreme 9mm bolt is THE 9mm bolt taken to the next level!! First, we use a standard mil spec proven 5.56 pivoting extractor for long service use. Next, we did away with that heavy gas key and replaced it with a...

Small-Frame (.223)   Machined from 416 stainless steel for optimum durability and longevity. Does NOT have forward assist serrations but does feature dust cover notch. 100% increase in bearing surface for smoother operation,...

Quarter Circle 10, THE AR Pistol Caliber BRAND. Leader in top of the line, dedicated AR15 Pistol Caliber parts. 9MM Glock Style Bolt Assembly Advanced blowback design Manufactured to function reliably with Glock...

  Machined to the same exacting tolerances as our bolt carriers, this second generation 9mm bolt assembly is an entirely new design that eliminates the need for a central mass (slug) to readily function with our 9mm JP...

When looking at lightweight bolt carrier groups, we were unsatisfied with what the market had to offer. Seeing a capability gap, we set out to create a bolt carrier group that could live up to the GUNNER name with no...

Two piece design with additional bolt tail options coming soon. 416 Stainless Steel High energy polish for ease of cleaning Properly torqued/staked carrier key fasteners Includes buffer and...

Small-Frame     7075 T6 Aluminum     Anodized While we introduced the original aluminum bolt carrier over a decade ago, we finally discontinued it after several customers had difficulties...

Small-Frame (.223)   Complete bolt carrier assembly with JPBC-3 .223 Low Mass Carrier and JPEB-223 JP EnhancedBolt™ with cam pin, firing pin and firing pin retainer. Machined from 416 stainless steel for optimum durability...

 JP Enhanced 9mm AR Bolt Machined to the same exacting tolerances as our bolt carriers, this second generation 9mm bolt assembly is an entirely new design that eliminates the need for a central mass (slug) to readily...