Diamondback Firearms' DB15 rifles raise the bar when it comes to features and performance. These rifles are 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. From the modified Diamondback aluminum four-rail handguard, to a variety of color, sight, and stock options, the Diamondback DB15 represents value and versatility all at a very affordable price. The DB-15 B features: an A3 flattop forged 7075 T6 aluminum, t-marked upper receiver, a Diamondback aluminum modified four-rail, an ATI Strikeforce collapsible stock, a 16" 4140 chrome-moly, M4 contour, free floated barrel with a 1 in 9" twist, and a shot-peened, magnetic-particle-inspected mil-spec 8620 bolt carrier. This rifle's stock, metal, and bore are all in very good condition.