12 gauge upper for any standard AR10 dpms lower. This will convert your AR10 into a 12 gauge shotgun that will shoot 3”/ 2 ¾” shells. Comes complete with bolt carrier, flip up sights sets, 10 round magazine and machined aluminum fore-end. Upper also has a 2 year warranty when registered with the warranty center International Firearm Corporation. 5 and 10 round magazines also available.