This BCA AR-15 complete 9MM pistol length upper has a 7.5" Heavy barrel with a parkerized finish, and features a 1:10 twist rate, with a blow back gas system. It includes a 6.5" MLOK rail, a branded M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected). This 9MM upper is compatible with any mil-spec AR-9 lower.
ALL OF BCA 9MM UPPERS ARE DESIGNED FOR USE WITH GLOCK STYLE MAGAZINES.
*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.
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.
Check out our AR9 and Genesis Mags here:
https://www.bearcreekarsenal.com/guns-parts/ar-9/ar-9-parts/magazines.html
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...
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