AVILABLE AND IN STOCK FOR IMEDIATE DELIVERY!!! This Sig Sauer P556 is a semi-auto pistol that shoots the 5.56mm or.223 round. It has a 10.25" barrel and has a black finish. This is a new pistol and comes with a flip up rear sight, hooded front sight, Sig Sauer STS-081 red dot optics, quad rail forearm, one 30 round magazine, sling mount, manual, lock, and a soft case. This pistol uses AR-15 magazines.