Diamondback Firearms DB10, Semi-automatic Rifle, AR-10, 308 Winchester, 20 Barrel, Anodized Finish, Black, Adjustable Gas Block, Magpul MOE-K Grip, Magpul MOE Stock, Black, 20 Rounds, 1 Magazine 1023C001 Diamondback Firearms is proud to announce its line of DB10 rifles made entirely in the USA! Starting with the tried-and-true, U.S. Military-proven gas-impingement system and using only the highest quality components machined in Diamondback's CNC facility.