No, it means your 10/22 [SN 121-01700] was made in 1980...! !Bucks Owin said:According to the Ruger site 1981 models start at serial #121-03969. My rifle is serial #121-01700. (The last two zeros are for privacy) Does this make my rifle a "pre-production" model? Does that affect it's value providing that I leave it 100% stock? (Or at least have all stock parts that may be replaced eg: hammer) I'm wondering if I should leave this rifle alone and get another 10/22 at the pawnshop or auction to start tinkering with.