P-Series - P345 Manual Safety Model Pistol
Caliber: 45 ACP
Beginning Serial Number: Years of Production:
664-00001 2004
664-06000 2005
664-39099 2006
664-51835 2007
664-67678 2008
664-76397 2009
664-90823 2010
664-96658 2011
665-04875 2012

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