Haven't posted here in a while; the reason being I was trying to get a new 3d printer for the longest time. I now have a cr-10 mini and finally got it to print properly. So back to the actual print; it is a nearly identical model of a 7.62x39 cartridge. With the only thing off slightly being the case taper. If you get the temptation to stick this in an actual gun I wouldn't recommend using pla.