Do you want an HK P7, have the cash for an HK P7 but don't want to have to deal with any potential problems that buying a pistol that has been out of serial production for going on 20 years? Well are you in luck because a guy in Texas is making new production P7's including classic and modernized versions
Always wanted a P7 but refuse to buy a pistol you can't attach a light and optic to? Oh boy your dreams have come true
New production Opitcs cut slide
Assembled large frame/.308 configuration
The man behind it, you can tell by those dual tubes this isn't some country bumpkin that knows CAD
Said to be a Bizon in Uruguay
Belarusian Journo with a PP-93 smg, doing the "MAC Suppressor grip"

Example seized from a criminal gang in Russia

Chechen SF with AEK and Stendo
Agram 2000 with DIY Top folding stock
I have found footage of an Suppressed AN-94 being fired.
DTM Machinegun in Syria
I swear someone in this thread (possibly myself) made a post about this thing getting SAAMI Spec'd like a year ago but I can't find and quote it so whatever. Winchester has a new* cartridge, the .21 Sharp, same .22lr case, non heeled bullet with FMJ, plated and solid copper Options. 15-25cpr (assuming it doesn't die on the vine I could see it getting down to 10-20cpr), requires a new barrel. Designed around hunting in states with bans on lead ammunition (will become increasingly common). Slightly higher velocities than stock .22lr
If anything, I think this cartridge has a significantly higher chance of surviving more than a few years due to it using standard .22lr cases. Not only does that mean a huge R&D Cost saving but a huge saving in manufacturing. All they had to shell out for was load development and projectile manufacturing. Will it in say, 50 years replace .22lr, I can't speak to that but it isn't out of the realm of possibility.
*Is it really a new cartridge if you keep the case and change the bullet a little bit?
VKS Vykhlop

Years ago I saw a picture of the baffle stack of this thing and it was so bad, 3 washers and a bunch of rolled up mesh. Someone (Zenitco, Hexagon, Sureshot) ANYONE, needs to buy a chinese DMLS and print up some next gen suppressors for Val/VSS/SR3/9A-91/VSK-94/VKS etc in both Inconel and Titanium, make them smaller, lighter and better performing and posting 4k pics on easily accessible western social media. It would be so kino.
Said to be a Ukrainian Bullpup Conversion from long before the SMO
Also this next one isn't a gun in itself, but
PKM Barrel with GP-25 mount
1911 with glued on "gangsta" sights

"AimLock" Chassis. Essentially you slap an M4 into a Chassis with a bunch of computer actuated servomotors that do micro adjustments to your point of aim by moving the rifle itself while you look through an electro-optical sight. Never really took off
Slightly more sensible model after a bunch of revisions
Popular Mechanics article on the system
Scoped and Suppressed PTRS
Desert Tech vs .338 Lap loaded with pistol powder
Recently there was a video released from Task & Purpose about the supposed glowing reviews of the XM7 from the troops issued it.
Well one of the persons quoted in the article took to the US Army Subreddit to reveal that Task & Purpose cut all of the negative things he had to say about the system entirely and has listed them in his post as well.