Please tell me anything you can about this rifle.

Just got this from my grandfather's estate, I never saw it before and don't know anything about it. It has a serial number on it but no branding that I can see. It also has the year 1955 on the barrel. Attached fold out Bayonette. And it looks like it can be loaded from the bottom. But I don't have any clip, and I'm not sure if it could take a clip. Thanks I'm advance.