It was a question whether i could replace the ar-15 bolt carrier with an m16 one and a bolt(which is what i meant by stuff, is the m16 and ar15 bolt even different?).

Why? Cause of what Ice Pirate said

" One huge and really major problem with the AR is that stupid massive cut in the underside of the bolt carrier combined with the equally stupid notch in the top of the hammer. It was said that these cuts were made to prevent conversion but the only thing they really do is cause the weapon to self-destruct, and jam like a SOB. There are always rough edges between these two parts and it's been my experience that it is the major reason for jamming AR-15's. You just don't see this with the M-16, because the surface of the Bolt Carrier that re-cocks the Hammer is flat and smooth as a babies butt, and the top of the hammer is rounded and equally smooth.

When at Lowery in '82, a representitive of the CBI came to visit. They'd just picked up a bunch of AR's for their officers and were having major jamming problems. I told him the same thing. I said if you'd just swich out the hammer and bolt carrier for ones from an M-16, those problems would go away.'