This will be a hot take but I think the community is too conservative with materials. I understand that printed bang sticks are inherently dangerous and it's best to be on the safe side, but there was a guy on reddit who printed launchers out of ASA only and got shit for that despite having working proofs. There even was a guy who posted a beautiful Urutau made from Creality Hyper PLA-CF and claimed over 100 rounds without signs of damage. OG FG…

Fully DIY 9mm handguns aren't viable yet. Simple blowback designs like the FGC9 don't scale down because you need about 500g of bolt weight. Until someone comes up with a viable locking mechanism, PDW size is about as compact as you can get.

More modern DIY alternatives to the FGC9 include Rogue/Rebel and Urutau. The Rogue/Rebel designs are very full-featured, but making the bolt is more work than other designs. Urutau is a pretty easy build an…

Not nearly as quiet as a big can like the FTN, but I don't have any way to quantify. It does take some of the "edge" off but it's not hearing safe. If I had to guess, it brings the 9mm down to about the level of an unsuppressed 22LR, so probably a 10 - 15 dB reduction.

The advantage the Khrizantzema has is that it's a flow-through design so you get a lot less backpressure than a traditional baffle can like the FTN series. On simple blowback PCC…