dek
Bearcat
I have a Mk III 22/45 w/hunter style 4.5 in bbl that I'd like to change to a Mk III grip. When fitting the upper to the grip frame, which part is fitted? As they are now, they will not fit. It appears easiest to file the slot on the upper receiver and increase the bevel to receive the lower grip catch. Anyone have any experience with this? And, is using a dremel w/steel cutter advisable or just go slow with a file? Thanks