these are referance solids (in imperial not metric) for the rmr and holuson k cut (modified rmsc), i drew these myself from
various diagrams i found and milled them into a couple of my pistols -
works great but i had to file the spuds down a bit on the holosun k cut if i recall correctly
LBRY Tags: 3d2a; rmr; guncad; optic; gatalog