This gun was used by my wife's grandfather in the Russia Army. I think it was made in the US though, and sold to the Russians. As the story goes her grandfather brought it to America when he emigrated here. Then gave it to her Father who recently passed away and left it to her. I think it is a .22 short. Rim fire, swing breach single shot design. No markings anywhere on the gun, (that I can find). Possibly a Frank Wesson?
Any comments would be helpful. Not sure if the story is accurate.