The TG2 Magnum smoothbore carbine, chambered in .366 Magnum, is based on the .308 Win. Saiga-308-1 v.61 rifle, with an appearance similar to that of an AK-103.  

It comes with two short 8-round magazines. It also takes more spacious magazines for competitive shooting purposes.

Georgiy Gubich describes the model in more detail on this page, and the core specs are available here. Black on black as usual, so nothing distracts you from the details. 

• Overall length: 945 mm
• Barrel length: 415 mm
• Cartridge used: .366 Magnum
• Magazine capacity: 8 rounds
• Weight with unloaded magazine: 3.6 kg