GP100® Revolver
Calibers: 22 LR, 38 Spl, 357 Mag, 10mm Auto, 44 Spl
Beginning Serial Number: Years of Production:
170-00001 1986
170-18081 1987
170-40819 1988
171-33130 1989
172-00859 1990
172-30612 1991
172-49299 1992
172-73459 1993
173-10032 1994
173-32506 1995
173-55795 1996
173-69135 1997
173-86751 1998
173-98541 1999
174-14075 2000
174-30948 2001
174-54400 2002
174-62013 2003
174-73415 2004
174-94092 2005
175-07470 2006
175-23438 2007
175-38226 2008
175-58296 2009
175-83537 2010
176-07061 2011
176-30507 2012
176-51462 2013
176-92800 2014
177-34524 2015

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.