1/2x28 Muzzle Device Keychain Adapter

This is a 1/2x28 threaded keychain adapter that can be used to keep track of thread protectors or muzzle devices at the range or in the field, or simply for storage and display.

I have not broken one of these without actually trying to, but I would recommend using a smaller sized key ring (20mm works well) as large ones give you a lot of leverage - this is just plastic after all! Those little 'ball chains' work even better in my opinion. For FDM I would recommend to print thick walls (1.2+) and ~50% infill. For SLA just make sure to cure the part before putting the ring on it - otherwise you'll end up with a nasty scratch.

I have separately uploaded a -14mm (airsoft) version of this part if that's something you'd also be interested in.