The Knoxville Police Department will begin a transition from a .40-caliber Glock to a .45-caliber Sig Sauer handgun after City Council approved the switch Tuesday night. At $750 each, the .45-caliber Sig Sauer is more expensive than the $600 .40-caliber Glock. But Rausch noted the Glock has a life of four years while the Sig Sauer is expected to perform for 10 years. http://www.knoxnews.com/news/2013/jan/23/kpd-switching-to-higher-caliber-service-weapons/ I seem to get more than four years service from my G 22's. Granted they do not see the rigors of duty that KPD's G 22's may. If one assumes that maybe the KPD qualifies twice a year,an use in the line of duty and some officers may actually enjoy shooting. I still can't imagine that they are trashed in four years. I know that I'm somewhere in the neighborhood of a minimum of 8000 rds. per year in at least two of my Glocks. To me they are in fine shape and not in need of replacement but maybe I'm missing something like taxpayers funds. SJ 40 Wanna kill these ads? We can help!