Yankee Hill Machine Company Black Diamond Carbine XL Features The Yankee Hill Machine Black Diamond Carbine XL is built on the AR platform and chambered in .300 AAC Blackout a cartridge prized for its versatility across both supersonic and subsonic ammunition in a single rifle. Its 16 inch barrel is long enough to extract solid velocity from supersonic loads while still keeping the overall rifle compact and maneuverable. The threaded muzzle lets shooters mount a suppressor for quiet operation with subsonic ammunition or add a muzzle brake to tame recoil with standard loads. Feeding from a 30-round magazine the Black Diamond Carbine XL offers the capacity shooters expect from a modern semi auto carbine. Yankee Hill Machine has built a strong reputation in the AR-pattern rifle and suppressor space and the Black Diamond Carbine XL reflects that background in its construction and reliability. The semi auto action is designed to run reliably across the range of .300 AAC Blackout loads this cartridge is known for from subsonic plinking rounds to full power hunting ammunition. Its carbine configuration keeps the rifle light and easy to maneuver whether in a home defense role or on the range. For shooters who want a dependable and flexible .300 AAC Blackout rifle the Black Diamond Carbine XL delivers a well-rounded package. Yankee Hill Machine Company Black Diamond Carbine XL Specifications Manufacturer: Yankee Hill Machine Company Model: Black Diamond Carbine XL Caliber: .300 AAC Blackout Capacity: 30 Rounds Barrel Length: 16 Available At: GrabAGun