Its an old semi auto Mossberg .22. He said his dad gave it to him after owning i for something like 35 years or so. Anyone have any info on this type of rifle or can point me in a direction of where to look? I would really like to learm some info about it. But yea, not a bad weekend EDIT: its a model 151-M. Looks like they started being produced a year or so after WWII. Gonna see if I can dig up any more info online.