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Post here if you have general questions concerning GunCAD, printing, or otherwise fabricating DIY firearms. Newbies are welcome, but users are encouraged to read Ctrl+PEW's Getting Started Guide if they haven't already.

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Which gun as first time complete DIY? (self.help)

submitted 1 month ago by BuzzingFly to c/help

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I want to build a complete DIY 9mm. I currently have 42crmo 16OD/8.3ID 300mm steel tube and as far as I know it is perfect for fgc-9. Any other recommendations, maybe a handgun?

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[–] Kopsis 7 points 1 month ago (1 children)

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 and a really enjoyable gun to shoot.

We'll hopefully be able to add the Decker 9 to that list soon.

[–] BuzzingFly 2 points 1 month ago (1 children)

Thanks for details. I just inspected the documents of Rogue and Rebel. It feels like they require too much work to do without a drill press or a CNC but I have no rush, I can take my time to build something.

[–] Kopsis 3 points 1 month ago

If you're not in a hurry you might want to consider the Decker 9. It's currently in beta but it will be very similar to the 380 version that's available now. It's a very easy (and inexpensive) build and has some cool options like side feed or top feed, different fire control groups, etc.