My rifle says Remington 22 short, long, long rifle Targetmaster model 610 on the barrel. It also has a stamp Remington Arms Co Inc. Ilion, N.Y. and the
patent numbers. Then there is a Kc5 stamped on the side of the barrel. I think it is a 22. Can I get a manual for this rifle? There are no serial numbers on the barrel. When do you think this gun was made? I got it from my Dad, and he is 82 now. Thanks for any help you can give me.

I believe if you look at the stamping a little harder it may say 510. This pops up quite a bit. You can google Remington 510 manual, and you will probably come up with one.