Ruger 22/45 Mk IV Bull Barrel Picatinny Adaptor
thingiverse
Simple adaptor that slides over the barrel of a 22/45 Mk IV with a bull barrel. I'm not sure if it will work with the Mk I/II/III but if you try let me know. I included a simple under barrel single, a tri-under barrel, and full length doubles and quads. Uses the front sight screw and simple adaptor screws you can find online. Edit: added recessed adaptor for threaded barrels
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