Proof Research 100523 AR-Style Barrel 300 Blackout 12.50" Pistol Length Gas System 1:8" Twist 5 Grooves, 5/8-24 tpi, Carbon Fiber Wrapped Feeders This model has a black

This model has a black finish and a KeyMod configuration that directly attaches using a patent pending

The Shocker case is designed with Mossy Oak Obsession accents

Included is a 2 foot USB-C charging cable

the Magpul ESK allows quick firing hand activation and deactivation of the safety and provides for ambidextrous use

Proof Research 100523 AR-Style Barrel 300 Blackout 12.50" Pistol Length Gas System 1:8" Twist 5 Grooves, 5/8-24 tpi, Carbon Fiber Wrapped Feeders This model has a blackUp to 64% lighter than traditional steel barrels of similar contour. Improved heat dissipation for cooler and longer lasting barrels. Wrapped with high strength, aerospace grade carbon fiber impregnated with a proprietary matrix resin.