A friend of mine brought this to me to help identify it and to know what kind of ammo it needed. I figured eventually the ammo, which is 22lr rimfire. But when trying to identify the exact model, I failed bitterly. The only writings on it are: St etienne / 5.5 / AR (with a crown like drawing above those two letters) / 2979 What I want to know is: - Value. - Accuracy. - Best ammo for it. (hunting small game and maybe deer too) I have absolutely zero knowledge when it comes to firearms, so sorry if it's a stupid question: Does 22lr have centerfire ammo too? If there is, which have a longer effective range? Thanks in advance.