A new 'Krinkov Class' / 'SBR Class' PDW has been released. 

The Dissent (awful name) by CMMG. 

14.7" folded 

4.8lbs (probably 5-5.2lbs with light stock)

6.5" barrel in 5.56 / .300 BLK / 5.7x28

-->Pretty comparable weight and length to the MP7, with the ability to use 5.56 mags and ammo. Downside is not Holsterable, and no doubt tremendously loud. 

It's also slightly shorter with +1" of barrel length compared to the SIG Rattler, which is 16" folded with a 5.5" barrel. 

Action looks to be Direct Impingement, while deleting the traditional AR buffer tube.

Initial shooting looks pretty low recoil and easy to handle:

YouTube

New CMMG Dissent PDW First Shots

New for 2022, the CMMG Dissent is a lot of punch in a little package.Get cool swag: https://the-honest-outlaw.creator-spring.com Here is a link to donate to ...

I think a 7.5"-8" barrel could make a compelling Carl Gustaf / NLAW / Milkor companion for those not looking into a dedicated PDW caliber ala 5.7/4.6. 

I went a slightly different direction but got to pretty much the same place...

Mine is 5.56, has an 11.5" bbl and will soon be sporting a brake and blast can though it doesn't really need it because it already shoots extremely nice.

The foxtrot Mike fm15 is also a DI gun just like the cmmg dissent, though I think I like what cmmg is doing with the recoil springs better.

I do question the exact niche the cmmg gun is going for too...

Realistically with the 6.5" bbl and no brace or hinge in it's factory weight spec it's going to wind up substantially heavier once it's actually in usable configuration.

I believe the fm15 11.5 started out around 6 pounds but once I threw on the hinge, tailhook mod 2 magnifier and dot it's definitely not 6 pounds now.

It's still extremely light and handy but it's definitely no feather weight.

I wonder if cmmg did the sling qd point on the rear below the picatinny interface like foxtrot Mike did, that sling point is darn handy

That looks great man.

Stock wise, theres a couple realllly light options.

Personally I'd love to see a Pic rail adapter to use the polymer B&T MP9 stock:

A close second (5.36oz + ~3oz mount) is the JMAC customs SS8:

That should put stocked weight at ~5.3lbs. 

Yeah I'm a fan of the jmac and the mp9 stock would be even better in some cases.

This said, due to the nfa I can't "stock" this gun.

Also, OG tailhooks are completely unobtainable right now which shaded my decision.

(As did the sheer cost and availability issues of my original plan which was to do an ACR brace)

Eventually this gun will get a different ass end but for now this definitely works (other than my dot I bought being 6 inches high at 5 yards when I took it out for initial break in lol)

I am actually coming back to 7.5x27 for cartridge and take it from there. 

graylion said:

I am actually coming back to 7.5x27 for cartridge and take it from there.

Could you be a little more specific?

Well, keep the pocket carbine discussed here, with P-90 style magazine and something like an 8" barrel, but use 7.5 FK

Is this a working gun that you're actually constructing?

nope, I do IT in real life ;) Just playing with ideas.

I'd personally see if you can handle a PS90 in person, or at a minimum the airsoft equivalent.

The top loading mag is cool for the PS90, but its also extremely limiting in its rail space / optic heigh. The magazines themselves are also super wide due to the feed tower, so only 1x mag can be carried per pouch. Whereas a normal box mag can carry 2x per pouch stacked alongside one another. 

A 7.5FK with a basic 30rd mag in the grip format ala MP7/MP9 would be a more practical PDW format.