RMR Picatinny Mount
thingiverse
The RMR screws simply directly thread into the body. You can get the hardware for these on McMaster-Carr (91255A199 & 92362A130) I recommend printing with the 45 degree face on a raft with tree supports turned on for 50 degree overhangs. I also have a model on my page that mounts directly to 10/22.
Download Model from thingiverse
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