M4a2 buttstock, buffer tube and spring. Commercial spec. Would like $40, but willing to trade for a short leg bipod. Or equal value in ammo. I'd take the following calibers. http://i1297.photobucket.com/albums/ag39/Jv1003/IMAG0352_zps706eead0.jpg 22lr 9mm .223/5.56 .243 7.62x54r 30.06 8mm mauser .303 british .300 win mag you can pm me or text message me and I'll send you some pics. Thanx, Josh, 503-969-4417.