Mech19

I took the BB19 step file and fixed a lot of the geometry on it. I thickened the front rails so that they don't fall apart with finger pressure, I closed surfaces and added some fillets where you'd want things to be a bit stronger. I rounded some corners to make it feel better in the hand and added a cut down where the mag release spring is so that you can get support out of it if you accidentally choose to put support up the mag spring hole. LBRY Tags: guns; gun; 3d