

As in .470 Rhino???

or a Rhino piston system???



Anyway, the gas key i used is shorter than a ZM setup, but the bushmaster barrel nut had to be significantly clearanced, but not so much as to compromise strength. If i was worried about it i could turn out a steel nut to replace the aluminum one. I also had to mill a shallow groove in the charging handle slot in the upper to clear the gas key where it sits, because i could not take the key any lower. As far as i know, ZM uses a proprietary barrel nut, as their forends are model-specific and a standard forend will not work. You didn't happen to grab a ZM gas block while you were at it, did you? The gas block/gas tube will give you some trouble and will have to be fabbed from scratch if you don't pick up a ZM one. I would also recommend using your high upper just for simplicity's sake, 'cause if you go much lower, you open up a whole can of worms with clearance issues, i just wanted to see if it could be done.

Just a note, my bolt is slightly shorter than a ZM, so the buffer plug would have to be a little longer to permit it to lock back...

Thanks for the interest! buckmeister,As in .470 Rhino???or a Rhino piston system???Anyway, the gas key i used is shorter than a ZM setup, but the bushmaster barrel nut had to be significantly clearanced, but not so much as to compromise strength. If i was worried about it i could turn out a steel nut to replace the aluminum one. I also had to mill a shallow groove in the charging handle slot in the upper to clear the gas key where it sits, because i could not take the key any lower. As far as i know, ZM uses a proprietary barrel nut, as their forends are model-specific and a standard forend will not work. You didn't happen to grab a ZM gas block while you were at it, did you? The gas block/gas tube will give you some trouble and will have to be fabbed from scratch if you don't pick up a ZM one. I would also recommend using your high upper just for simplicity's sake, 'cause if you go much lower, you open up a whole can of worms with clearance issues, i just wanted to see if it could be done.Just a note, my bolt is slightly shorter than a ZM, so the buffer plug would have to be a little longer to permit it to lock back...Thanks for the interest!