This BCA AR-15 complete 9MM rifle length upper has a 16" M4 barrel with a parkerized finish, and features a 1:10 twist rate, with a blow back gas system. It includes a 15" MLOK rail, a branded M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and right-side charging (Gen2) handle (patent protected). This BCA 9MM upper is compatible with any mil-spec AR-9 lower.
ALL OF BCA 9MM UPPERS ARE DESIGNED FOR USE WITH GLOCK STYLE MAGAZINES.
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*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.
|4150 Chrome Moly Vanadium
|1/2 x 36
|Right Side Charging
|Complete Upper Assembly
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 - ...
What mag works best for BCA 9mm's?
Check out our AR9 and Genesis Mags here: https://www.bearcreekarsenal.com/guns-parts/ar-9/ar-9-parts/magazines.html
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