BC-15 | 12.7 x 42 Upper | 10.5” Parkerized Heavy Barrel | 1:20 Twist | Pistol Length Gas System | 10” MLOK | with BCG & Charging Handle

In stock

This BCA AR-15 complete 12.7x42 pistol length upper has a 10.5" parkerized heavy barrel, and features a 1:20 twist rate, with a pistol length gas system. It includes a 10" MLOK Rail, an M4 flat-top forged upper receiver, a BCA AR15 bolt carrier group, a flash hider, and a rear charging handle. This 12.7x42 is compatible with any mil-spec AR-15 lower.

Shop more 12.7 x 42 Uppers!

Magazine not included. Check out Magazines here!

*Note – We strive to provide the most accurate photographs of our product. Variations may occur in the skeletonized section of the handguard/flash hider you receive.

Attention SignAttention Sign

WARNING: This product can expose you to chemicals, such as lead and other petroleum products, which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to the California P65 Warning site.


More Information
SKU 9755N-UA127PHB10.5120P936-10M3
Weight (lbs) 4.500000
Magazine Capacity N/A
Barrel Length 10.5
Profile Heavy Barrel
Twist 1:20
Barrel Finish Parkerized
Material 4150 Chrome Moly Vanadium
Thread Pitch 49/64 x 20
Caliber 12.7 x 42
Feed Ramp Single
Flutes Non-fluted
Gas System Pistol Length
Gas Block System 0.936
Charging Style Rear Charging
Classification Complete Upper Assembly
Platform AR-15
Bolt Material E9310
Receiver Material Forged
Customer Reviews
Customer Questions
What magazine/ammo does BCA recommend for each caliber?
Caliber Magazine Ammo Grain Weight Ammo Brands   BCA Status AR15 - 223/5.56 MagPul PMAG, MFT 55, 69, 75   Sierra   AR15 - ...
Please, mind that only logged in users can submit questions

Ratings & Reviews

Copyright © 2024 Bear Creek Arsenal, LLC. All Rights Reserved.