Thread: unknown .22 pump action

hey all i was given this .22 when i got my license from my grandfather who asked for me one day to get it fixed and working the way it did when he use to use it shooting. one of my problems is that i do not know what model or brand it actually is.

does anyone know what it is as i thought it was a model 12 Remington but has parts of the gun look different. if anyone could shed some light it would be much appreciated