Diamondback Firearms DB15, Semi-automatic Rifle, AR, 223 Remington/556NATO, 16 Barrel, 10 Free Float Rail, Matte Finish, Black, 30 Rounds, 1 Magazine DB1717K002 Diamondback Firearms is proud to announce its line of DB15 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. The DB15 raises the bar when it comes to features and performance when compared to others. The Diamondback DB15 represents value and versatility at a very affordable price.