AR15 USGI 6 Position Collapsible Stock, complete with buffer and buffer spring. Includes M4 stock, receiver extention (buffer tube), end plate, castle lock nut, carbine buffer, and spring. These stocks will fit on any Milspec AR15, M4, M16 lower receiver. Made in USA. Do not be fooled by the cheap Non-American made copies. These are the real ones!! Color OD Green