Red Label Over-and-Under Shotgun (Manufactured from 1978 to 1995) Gauge: 20
Beginning Serial Number:	Years of Production:
400-00001	1978
400-01853	1979
400-09852	1980
400-22235	1981
400-28112	1982
400-32690	1983
400-38820	1984
400-39749	1985
400-40924	1986
400-42027	1987
400-43521	1988
400-44182	1989
400-48177	1990
400-52607	1991
400-54366	1992
400-55323	1993
400-58931	1994
400-61534	1995

The above chart shows the approximate first serial number shipped for the indicated year. This number should be used as a point of reference only. It is not necessarily the very first serial number shipped, but it can be used to determine the approximate year your Ruger firearm was shipped.

Ruger does not necessarily produce firearms in serial number order. There are occasions when blocks of serial numbers have been manufactured out of sequence, sometimes years later. Also, within a model family the same serial number prefix may be used to produce a variety of different models, all in the same block of serial numbers. And in some cases, firearms may be stored for a length of time before they are shipped.

For details on your specific serial number you may contact our Service Department: 336-949-5200

For serial numbers manufactured prior to our electronic records, or for an official letter confirming the details on your firearm please download and mail in the Request for Letter of Authenticity form.