(DB175AK061) This is a new Diamondback DB15 semi-auto AR-15 chambered in 223/5.56 Nato. It has a 16" barrel, optics ready receiver, A2 Flash Hider, 1/2"x28 threads, 1:8 twist, and a weight of 6.3 lbs. Featuring a 12-inch M-Lok rail, Magpul grip, 6-position adjustable stock, and a durable 7075 T6 Aluminum construction. This model is a Sports South Exclusive. Comes packaged with the original box, manual, and one magazine.