https://nemoarms.com/product/mongoose-9mm-carbine/



$1950 MSRP, Scorpion mags, tilt barrel design, so similar conceptually to LWRCI SMG 45.

Going to have the same price tag?

ETA: That's what happens when you get to not paying attention. That's better than I would have expected.

I'm quite impressed. Good choice of the magazine. Potentially OOB-safe (cannot be sure without looking inside, but it can be). And hopefully they can make it accurate (unlike LWRC SMG-45, which operates in the same way).

My later production LWRC SMG 45 does not have the accuracy issues. I understand that I have a sample size of 1. YMMV

That’s interesting.

I'd be interested in seeing internal pictures of the barrel and bcg to better understand the operating system. Any other 9mm pcc have similar operating system as this Mongoose?

Only 2k.

Hope it's better then those brass eating 300 Win Mag AR's.

Recoil operated?  Would this need a booster then for using a suppressor?

You need a threaded barrel first. Their website does not mention it and the photo looks like it's not threaded. Of course, the cap has to be removed to admit the suppressor too.

With that said, depending on how the action is made, you may get away with a suppressor attached directly. Designers of recoil operated actions in this format can vary the amount of energy harvested by changing the length of travel and mass of the bolt, to some extent. That is why Mauser carbine remained reliable with a long and heavy barrel. That is all theoretical though. Millions of pistols use Nielsen devices successully. I would not cry too badly if Mongoose required a booster.