Not sure if this is the right place for this topic:

I was wondering if anyone knew of a semi auto Ultimax 100 ever being built from a parts kit, or if it’s even possible, i.e., if there is an “approved” design for such a build. The Ultimax 100 fires from an open bolt, which I know makes things a bit… complicated. But I know there are some semi-auto builds made from parts kits of open bolt guns.

Much appreciated.

If anywhere would have that info it’d be the WeaponsGuild forum. I’d make an account there and ask around. That’s the go-to place for build info on anything you can think of.

There have been a few F/A rewelds/builds over at Weaponsguild ...... but no semi's. There was a single thread from 2014 that fizzled, and went nowhere