AR15 Barrel Punch for stuck barrels

thingiverse

I found myself in need of removing a previously shimmed for thermal pressfit (.001" interference fit) between the barrel extension and the upper receiver. On top of the pressfit, a little Rocksett had been used so the barrel was really seated in there. My solution was to design a solid printed 2-piece (because it was too tall) AR15 barrel punch. It was designed to hopefully press on both the floor of the barrel extension and the OD at the same time. Simply printing the 2 pieces, pushing them together results in a perfectly sized, no-slip punch to knock out a stubborn barrel from the receiver. It worked beautifully.