Must be quite a modified AR-15, yes?

Meanwhile, what is the pistol model?

slide seems like a P226 but the grip seems like a 92F
must research more

mathwizi2005 said:

slide seems like a P226 but the grip seems like a 92F
must research more

Based on the grip and sunaipu's previous images, it's an S&W M&P.

Juicy details:
Muzzle Device: Noveske KX3 or KX5. (If you look under one of the modular slots, you'll see it's too short to be a suppressor.)
Handguard: Daniel Defense MFR
Pistol Grip: Magpul MOE (FDE)
Trigger Guard: Magpul MOE (FDE)
Stock: Magpul CTR (FDE)
Ambi Selector: Battle Arms Development Ambidextrous Safety Selector (BAD-ASS)
Flashlight: Most likely a SureFire M600 with an HSP Thorntail mount.

I'm fairly sure the assault rifle is an AAC Honeybagder.

Found a FPS Russia video of one on Didloaded's twitter page and Didloaded and Sunaipu are friends.

It's a similar-looking configuration, but the Honey Badger has some irreversible changes to a standard AR, most notably the cuts in the receivers to accommodate the sliding stock. It also doesn't use the MFR handguard. (On an unrelated note, the flashlight also looks like an Inforce WML to me, but it's hard to tell.)

Also a SOE Cobra belt.
Closes thing to the skirt would be a 5.11 Tactical Kilt