So here's the story. When my grandpa passed he gave this gun to my cousin who just recently passed away. I acquired the gun, and have been trying to figure what caliber and make it is but have been running into trouble. Help would be greatly appreciated. Thanks in advance. Marking include ceskoslovenska zbro jovka a.s Brno and the serial # is 6895 and it is on the barrel and bolt there is also a lion stamp on the barrel I will post some pictures shortly.