The new VOLUNTEER Series MSR platform features Smith & Wesson excellence perfected right out of the box. Each delivering the rugged performance of competition-ready, S&W precision plus the advantage of name-brand accessories from partners like Radian, B5 Systems and Bravo Company. Equipped to excel and primed to compete, the VOLUNTEER Series are ready to roll. Specifications and Features: ACTION: GAS OPERATED BARREL LENGTH: 16 CALIBER: 6MM ARC CAPACITY: 25 COLOR/FINISH: BLACK NUMBER OF MAGAZINES: 1 OPTIC READY: YES BARREL MATERIAL: 4140 CM GRIP: B5 SIGHTS: FOLDING SAFETY: THUMB SAFETY STOCK: ADJUSTABLE THREADED BARREL: YES SIZE: RIFLE STATE COMPLIANCE: N/A MODEL: M&P 15 VOLUNTEER FRAME MATERIAL: ALUMINUM