JP AR15 FMOS BCG with JP Enhanced Bolt


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JP AR15 FMOS BCG with JP Enhanced Bolt

JPBC-2A | Full Mass AR15 Bolt Carrier Group

JP AR15 FMOS BCG with JP Enhanced Bolt is for any application where absolute reliability is needed.  The 416 stainless steel Full Mass Operating System (FMOS) carrier design is the best of the best.  The JPBC-2A has every strength an operator expects from a MIL-SPEC carrier.  Also, it is built upon improvements born from decades of shooting and engineering experience.  Complete JPBC-2 Stainless Bolt Carrier Assembly with Full Mass Carrier and JPEB-223 JP Enhanced Bolt with cam pin, firing pin, and firing pin retainer.

Since it is designed with extended forward assist serrations and a dust cover notch, our FMOS™ carriers also feature a 100% increase in bearing surface for smoother operation.  The improved alignment and lower wear in the upper receiver.  The JP AR15 FMOS BCG has a longer MIL-SPEC cocking pad for optimal reliability.

Not for use in AR10 type rifles.

Surface and Finish

Just as critical as the design is the robust finishing process of the FMOS carrier.  It receives a roller-burnish of its bore for frictionless operation.  Because of this, it eliminates the peeling chrome common to standard Mil-spec carriers. Then, the exterior bearing surfaces are polished before the carrier undergoes our state-of-the-art, multi-vendor QPQ (Quench-Polish-Quench) process.  This results in a rock-hard surface with great lubricity. This is hands-down the best designed and highest quality general purpose carrier on the market.  Lastly, when properly lubricated, a JP operating system will make your rifle feel like it’s cycling on ball bearings.

Arm or Ally carries the JP Silent Captured Spring.  Also, check out our extensive AR Barrel inventory.  If you need more parts or looking to upgrade your AR15, view our full line of AR Parts.

Additional Information

Manufacturer:  JP Enterprises
Part #:  JPBC-2A
Platform:  AR15
MSRP:  $352.95

Weight 13 oz
Dimensions 10 × 3 × 3 in
Coating Type

Black Nitride


JP Enterprises

Part Type

Bolt Carrier Group, Upper Receiver Parts



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