Thread: How to immobilise old fiream to create safe wall hanging

You could always ask the firearms safety authority, this should be right up their alley.

Speaking to a chap I know who used to do this sort of thing in the NZDF, he said it can get pretty involved, but here is a few things you could do:
Shorten the firing pin,
weld the firing pin hole up,
Pin/weld the action so it can't be cocked,
drill a caliber sized hole at the commencement of rifling,
Plug the bore (tight fitting rod and welded)
remove the sear.

I guess it just depends on how far the cops and firearms safety authority want you to go.