This BCA AR-15 complete 12.7x42 rifle length upper has a 16" parkerized heavy barrel, and features a 1:20 twist rate, with a carbine length gas system. It includes the new 15" MLOK handguard, an M4 flat-top forged upper receiver, a BCA AR15 bolt carrier group, 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!
|Material||4150 Chrome Moly Vanadium|
|Thread Pitch||49/64 x 20|
|Caliber||12.7 x 42|
|Feed Ramp||Single Feedramp|
|Gas Block System||0.936|
|Charging Style||Rear Charging|
|Classification||Complete Upper Assembly|
What magazine/ammo does BCA recommend for each caliber?
These are brands that BCA uses in the facility to test fire our products. However, there are several brands that will also function properly. Caliber Magazine Ammo Grain Weight Ammo Brands BCA Status AR15 - 223/5...