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 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, models may be stored for a length of time before they are shipped.

For details on your specific serial number you may contact our Service Departments:
• Rifles, Shotguns, Revolvers: 603-865-2442
• Pistols: 928-541-8892

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.