I need one to accomplish a little home brewed AR repair (loose barrel). I've looked at both the Bushmaster offering, and the 'Delrin' block sold by Brownell's. Aside from the lack of an action insert on the Bushy model (or at least they don't show one on the website), is one any better than the other? The Brownell's unit is about 6 or 7 bucks more than the Bushmaster.
I would have preferred to have a qualified gunsmith do the work, so I asked a local gun shop owner for some help (he was recommended by an aquaintance as having extensive armorer experience in the Marine Corps). He made kind of a goofy statement after I explained my problem. "...if it's not a Colt, I can't touch it....it's a liability issue...If I did any work on it, it'd be considered manufacturing a Class 3 machine gun..."
I'm still scratchin' my head over that one.