The Rock River Arms Coyote Carbine Complete Upper in .300 AAC Blackout (brand part number BLK0592) pairs a forged A4 receiver with a 16-inch chrome moly barrel cut with a 1:8 twist, a good all-around rate for stabilizing both light supersonic and heavy subsonic .300 Blackout loads. At 16 inches, the barrel clears the federal rifle-length minimum, so no NFA paperwork is required. The muzzle is threaded 5/8×24 for the included Smith Vortex flash hider, and a low-profile gas block keeps the profile clean under a 12.5-inch lightweight free-float M-LOK handguard. The upper ships complete with a bolt carrier group and charging handle assembly, finished in black.

Key Specifications

• Chambered in .300 AAC Blackout.
• Barrel length of 16 inches, clearing the federal rifle minimum.
• Barrel is chrome moly, black finished.
• Twist rate of 1:8.
• Receiver is forged A4.
• Includes a Smith Vortex flash hider, threaded 5/8×24.
• Runs a low-profile gas block.
• Handguard is a 12.5-inch lightweight free-float M-LOK rail.
• Includes a bolt carrier group and charging handle assembly.
• Part of RRA’s Coyote Carbine lineup.

Frequently Asked Questions

Does this include a lower receiver? No, this is a complete upper; it requires a compatible AR-pattern lower to build a complete rifle.

Is a 16-inch barrel legal without NFA paperwork? Yes, 16 inches clears the federal rifle minimum.

What twist rate does this barrel use? 1:8, a versatile rate for both supersonic and subsonic .300 Blackout loads.

Buy the Rock River Arms Coyote Carbine Complete Upper

Add a versatile .300 Blackout upper to your AR-pattern lower. Order this Coyote Carbine upper from Rock River Arms through our AR15 uppers lineup, and our Lubbock, Texas team will get your order ready to ship as soon as it’s available.