We cerakote 17-4 SS glock slides at work and that's a lot harder than aluminum, the coating still wears off during normal use. It doesn't look bad but I would expect any cerakoted part to show wear, especially if it's on something soft like aluminum. It will definitely scratch easy.
I did an mp17 with just a normal glock locking block and rails, lpk, and completed slide. It takes some extra hardware like 1/4" pins and some metric screws and an ar charging handle but it's extremely basic.
It's literally just a glock 17 with a cover on top and a pic rail for a stock/brace.
Imo, lower heights make it look nice but significantly extend your print time without actually improving strength. 0.2mm is just fine for 0.4 nozzles. It's a great balance between looks and print time.
edit: I've never done science on it but I'd almost be willing to assume lower layer heights may be weaker since layer adhesion is your primary issue with FDM and smaller height = more layer boundaries.
I can't wait to print this, I've been wanting to buy a PDW style stonk but I really don't like how the HBPDW uses a tiny tube. This will be a game changer.
If the reliability doesn't matter, 100% do a 22lr just to learn how to print gats. Galileo R2 or Decimator are both great options that borrow a 10/22 bolt.
If you want some footage I'm down to share some churned butter footage. Anything to help the cause. I think this clip is around ten rounds, I'd have to slow it down to count manually.
Honestly? If in the US, get a 10/22 and print one of the MANY chassis for that bolt/barrel. After that, do a glock and learn why not to like browning tilting actions. After that, do a fuckin AR lower and give up on any other platform. AR is life.
edit: I saw you want a handgun, I guess glock but listen, sidearms are just backup. You're gonna get much more reliability from a proper centerfire rifle or carbine.
I'm gonna take a wild guess and say this bot is full of shit, the mag looks like your typical 33rd glock mag, and it doesn't sound like it went through the entire thing. I can't guess a rate of fire, while it was extremely quick we need more samples to guess better. I don't think this went through more than 1/4 of the mag though.
edit: the flash out of the dust cover looks like you may have had an OOB.
We cerakote 17-4 SS glock slides at work and that's a lot harder than aluminum, the coating still wears off during normal use. It doesn't look bad but I would expect any cerakoted part to show wear, especially if it's on something soft like aluminum. It will definitely scratch easy.