Smokeless requires some dangerous chemistry, nitrocellulose and nitroglycerin are sensitive, more than you’d think. I would start with production and storage of those before you even consider trying smokeless. If you can make, test, and store those, you’ll be fine. The rest of the process is just stabilizing it.

edit: if you live in a place that you can buy smokeless, just buy it. The juice ain’t worth the squeeze.

I believe the still in beta #beta.aveees.DDxx.3 rails/lb are gen 4/5 compatible. I haven’t tried them out cause I get free gen3 slides from work and most all aftermarket focuses on gen3.

edit: if you’re just getting started, ignore gen4 and print ddxx.2 projects, 17 or 19, just use gen3 parts. It’s the current meta for a reason. Very well established, huge aftermarket for the ecosystem. Not to mention the biggest market in the states is CA and gen4/5 is a no-go there. That means most free states prioritize gen3 production.

No issues, but mine isn’t direct blowback. I use a CMMG RDB setup, so there’s no potential for OOB, when the locking lugs aren’t seated, the firing pin can’t set off a primer.

The carrier is mostly identical to a milspec 5.56 carrier, the cam pathway is slightly different but the bottom surface that the SS cam depends on is identical. Anytime I do fun stuff with this build I just use the prints for any other AR-15.

Interesting, so this happens with the hoffman SS also? You’re gonna have to play with buffers and the gas system for sure. I haven’t put one in my 5.56 setup yet I just frt the 9x19, it’s so smooth.

Awesome! Yeah that was the only 43 backplate I saw that didn’t have an autosear >_<

No problem! Lemme know how it works :)

It’s possible your scaling was off, try this one out https://guncadindex.com/detail/M12-G43-Baseplate:a

It’s the only g43 backplate I could find. This would be a starting position, the size of the backplate and the position of the circular indent on the inside face both need to cooperate for that firing pin sleeve to line up and lock in.

It’s not the channel liner but the firing pin sleeve that retains the backplate. Are the lips on the charging handle / backplate smooth? Can you smooth them out with a file until it seats fully up?

edit: Try printing that original slim chargy to see if it’s a problem with your source model.

It’s really neat how I can subscribe to this other server but still use this one as the interface. I’ve never used fediverse before this is interesting.

NICE. Are those supersonics?

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What’s the issue with operation? Just not cycling a new round in or not dropping hammer on return to battery?

Dogs are better than people could ever be.

Oh wait sf5, I don’t have an mp5, only mechanical delay setup I have is that radial delay 9x19. I just do a lot of ar stuff.

I will report back, the circumstances surrounding my turd build is weird. I was gifted some SCS turd parts, and he’s not sure which parts he bought. I think it’s the fl-eggs files, and the housing for it dry-functions perfectly in a bipoly. I picked the kak 3pos selector and used this filing jig.https://guncadindex.com/detail/KAK-3pos-Selector-File-Jig:9

I’ll test next weekend. Only problem with the kak 3pos is that you have safe, FRT, and FRT. I thought middle would make the disconnector work.

I’ll have to bring it out again next time, just finished a kabuto frt and I plan to use the RDB upper and a 5.56 upper with it.