I own a 22 pump made by remington, octagon barrel, circular magazine, 24" barrel, metal buttplate. I think the serial number is 76931 with the letters RW above the numbers. It also has a fold down rear peep sight.
I really love this little pump which belonged to my dad until he died in 99.
I just recently realized that I know very little about this gun.
Any help would be greatly appreciated.