I have a custom built Classic Army M16 build. Bought the original gun years ago and began using it and upgrading it over time. I replaced the outer barrel with a noveske 20inch barrel. Change the grip to a 416 grip and the front end to a mots light weight keymod system. Internally it has been gutted and highly upgraded to 420fps and a higher rate of fire and is basically all new. Included with it is the 3 high caps and the extra rail system pictured. Buyer pays shipping.