Rustpot
M Frame Lover
take a look in the actual thread rusty, i've already got the doors made. those were the closest thing that mcmaster had that i could just download. too lazy to actually draw the ones i have.
Never really got into guns. The only one i've ever shot was a .357
McMaster has garbage for CAD downloads. SouthCo is your friend for all things handle/latch/hinge-related and should have .stp CAD for everything, and I believe McM stocks them on certain stuff.