Side view of MTs-225.
The MTs-255 is a shotgun fed by a 5-round internal revolving cylinder. It is produced by the TsKIB SOO Central Design and Research Bureau of Sporting and Hunting Arms. The Russian-made guns are available in 12, 20, and 32 gauges, and .410 bore.
With action open.
Teh MTs-225 is unique in that the forearm extends nearly all the was back to the cylinder. The shotgun is reloaded in a manner consistend to that of most modern revolvers, by unlocking the cylinder and swinging it away from the frame to the left and down.