Low Mass Components

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...

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

Std. Rifle Length Gas Tube Length - 15 1/8Std. Mid Length Gas Tube Length - 11 3/4Std. Carbine Length Gas Tube Length - 9 3/4

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...

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...

  Standard .750" barrel diameter Slim design with lightening cuts reduces weight Adjustable via a set screw so that you can tune it to your preferred ammunition Gas port adjustment is on the front, so that you can...

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...

Seekins Precision’s Adjustable Gas Block allows you to fine tune your rifles gas system. The gas block is designed to be field adjustable. No need for locktite with the locking brass set...

Rhino Series Adjustable Gas Blocks are machined from steel and finished with a salt nitride bath, giving them extreme durability, and resistance to scratch and corrosion. Rhino series gas blocks are adjustable, so you can...

JP Adjustable Gas System for AR-type rifles. ■Low profile, rail-free design allows installation under hand guards. ■Material: 416 stainless ■Finish: Black oxide ■Weight: 2.25oz ■Length: 1.28" ■Height: 1.40"(overall), ...

Other gas blocks are tunable, but the Adjustable Gas Block from ODIN Works is truly adjustable and packed with features. Machined from steel and black nitrided for durability. Front facing Inconel adjustment screw and spring...

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...

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...

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,...

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...

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...