My brother ran a Customs go fast boat out of Key West in 1986-87 and always talks about the S&W revolver he was issued. I sent him a link to this thread and here is his response:

"That's the CS-1 and grips I had in 1986. The first time I fired it the grips fell off. I was going to put them back on, but the range officer said that in non-emergencies we could not do anything to our weapons except clean them. It went to the Customs gunsmith. That was true for our personal weapons that we carried as backup. Routine cleaning and nothing else. It was an excellent pistol. 357 Magnum is still my favorite pistol round."

In an earlier conversation, I remember him saying how much he liked the trigger
Paul, Ohio, USA

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Paul
Sandusky Bay, OH