This KS-12 is a Saiga shotgun made under license in the US by Kalashnikov USA. It has an 18.25” threaded barrel, takes 2¾” and 3” magnum shells, has a telescoping stock, and pic rails at 3, 6, and 9 o’clock. It has an adjustable gas valve for using heavier and lower recoil loads and is compatible with most Saiga 12 accessories. It will come with one 10rd stick mag. Very low round count, I’ve never fired it - I bought it and then found an S12 I liked so just trying to recoup my cost. I also have an MD Arms 20rd drum available to the buyer for $75.