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300Blk uppers for AR15 in a wide range of Cerakote colors like FDE and OD Green are available from Always Armed. 300 BLK AR uppers are the top choice for your next hunting AR15.
The Anderson Manufacturing 300 Blackout Complete Upper Receiver is a great way to quickly and conveniently build out, or change an existing AR-15 to shoot the popular 300 Blackout round. The 16” barrel has a 1-8 twist rate and a Type 3 Hard Anodized - Black Finish.
If you're a serious shooter, the Wilson Combat 300 Blackout Complete Upper is precisely what you need. Boasting unparalleled ammo performance with its Protector Model 16" round profile barrel and 1:7 twist ratio, this upper provides unbeatable accuracy for any application.
Start your build off right with a 300 blackout upper from Palmetto State Armory. We offer AR-15 uppers in various barrel lengths and finishes to fit the needs of your build. We also carry 300 blackout kits , complete guns, and 300 blackout ammo .
Our 13.9” barrel features a 1:7 twist. Our .300 AAC (Blackout) barrel features our dedicated .30 caliber enhanced extension. This extension improves the reliability and cycling of multiple types of subsonic and supersonic .300 AAC ammunition, including hollow point.
AR-15 300 Blackout 16" Med Profile Black Shark Upper Assembly / Mlok. Created by Moriarti Armaments. CA and NY compliant. Action: Semi-auto Gas System: Pistol Chamber: 300 Blackout Twist Rate: 1/7 button rifled Barrel: 16" med profile barrel, 4150 CMV, heat ..
Muzzle threaded in standard 30 cal (5/8×24). Includes KMR-A5 KeyMod™ Handguard. Includes 762/300BLK Flash Hider. BCM® has taken great care to ensure the best possible performance and interchangeability.
