The Diamondback vision began in 1989 with a small shop of three employees that had a desire to create what they wanted, how they wanted it, without compromise. Since then, that small shop has transformed into a crew of over 200 passionate individuals dedicated to perfection in the process of designing, manufacturing, testing, and delivering their products from their hands to yours, right here in the U.S.A. The DB15PCML7SB3 is a semi-automatic rifle chambered in 5.56 with a free float barrel, MLOK handguard, SBA3 adjustable brace, and Magpul AR 15 furniture for rugged dependability.