JC Higgins mod 29/ hi standard tube fed .22
So I am looking at picking up an old tube fed .22 semi auto. It's a Sears Jc Higgins model 29 which is a Hi Standard rebrand . Gonna meet him at the range to check it out and am quite honestly not sure where to start as far as systems checks on a tube fed.(we will be at a range so shooting it obviously)...His grandpa left it to him and he has never shot it. I can't find much on this gun or even type...