Bushmaster or a colt? My colt is a pre pan M4 with match target barrel. Have since put a 6 way stock, quadrail, forward pistol grip and mag well grip on it. Looks pretty good. kept all the original equipment. This is a tack driver @ 150 yds. Awesome varmint gun. Bushmaster is a carbine one of the ones made in Maine. Being from Maine.... Trade both for a descent project.