Century Arms Ar 15 .223 caliber. This rifle is styled after the M16A1 used in Vietnam.It has the triangular forearm,forward assist,trapdoor butt stock, removeable birdcage flash hider. This gun is like brand new only been shot 35 times.Comes with one 20 round magazine and sling. 800.00 reserve.shipped to your FFL. please only bid if you are going to pay.