Well, When I joined the Border Patrol in 1971, the Patrol did not recycle their revolvers & we had a mish mash of issue w/ some being S&W model 19's & the Colt Border Patrol ( a trooper model w/ a different name ) in .357. The Border Patrol model was only produced for 2 years. But were not like much in my station. Bluing was not good & surface rust was a problem & at qualification, one Agent had the front sight fall off. The Colts were replaced by S&W model 66 in SS later. I had a Smith model 19 my whole career w/ the exception as a K9 handler for 5 years, where I carried a Glock 17 to carry a sub sonic round in 9mm. The BP Colt is worth much more to collectors today. I was fortunate to find one for my collection & was an issued weapon to a TX DPS trooper, as it also has a DPS marked serial # on the side.