I've heard that even 3d printed SS's will last a couple hundred rounds
Instead of getting a ghetto metal one, just consider getting a printer, can't be more expensive than 1 or 2 of the metal ones.
Depending on how this rolls, you could just give the DMB SpicyMeatball a lil squirt if it's all the same.....
What's the print cost per gun if they only last 300 rounds? I say "only" but that's damn impressive that they last more than a few rounds. Plastic is versatile and they keep finding new limits for the stuff.
Less than ¢50, and that's if you're using $80/kilo PA-CF. If you're using $10/kilo PLA then you're looking at literal pennies and less than 3 hours or so to make one.
PLA-CF would prolly be a good move if you don't have an enclosure and a machine that'll do nylon, but gets close to nylon performance. Minus temp resistance of course, but your lower better not be getting hot.
Printed shit is pretty awesome for things like grips, stocks, rail accessories, or anything that'd be injection molded or made of a zinc alloy usually. You can replace my lots of steel and aluminum parts as well, beefing stuff up of course.
By the sounds of it, most companies hate the 3D gigachads since we're not gonna buy their faggoty gatling AR grip or whatever bullshit, we're gonna print it for a handful of change and tell them to suck it.