Original design was by "Crochwork" on thingiverse, thing 4388087. It was made to have an opening of 20mm(airsoft rail?idk). I simply widened it to proper width to fit a proper 1913 rail. Its designed to accept 1.75mm filament for the sights. I found if you use transparent filament, visibility is great. Reminds of a pellet gun I had as a kid.
Great cheap sights if you want to test a prototype gun build without risking a good optic
LBRY Tags: 1913 rail; sights; 3d2a; picatinny; rail
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