I was a civilian LEO in 1978, issued a NIB 4 inch Model 15. I was also a Security Specialist in the ANG and shot Expert with the 4 inch Model 15 at the Medina Annex ranges at Lackland AFB. After commissioning and navigator training, I was assigned a 2 inch Model 15 to carry in a survival vest during deployments and alerts. The gun was issued by the Life Support/Personal Equipment shop. When I deployed to Desert Shield, I carried a 4 inch Model 15 and converted to the M9 while in Saudi Arabia. I still have my original AF blue web belt, swivel holster, and (a replacement) drop box that I carried as a Security Controller, as well as a replacement 4 inch and 2 inch Model 15. The 4 inch gun has the target trigger and hammer just like I carried at my first LE job. Great memories of and with those guns.