In the circles I sometimes frequent, the IL's on S&W revolvers last about as long as factory exhaust on H-D motorcycles.
HA!! I still have the stock exhaust on my '07 Road Glide too!!

In the circles I sometimes frequent, the IL's on S&W revolvers last about as long as factory exhaust on H-D motorcycles.
Years ago I put one of the S&W keys on my keychain "just in case".....the dreaded involuntary lock-up occurred. Have never used it. I ignore them. Over 10,000 rounds through IL revolvers including some real hard-kickers (a pair of 500s, 340PD among several) with nary a glitch. But the key is on hand at all times, just in case!![]()
"Plugged" my 340PD and tossed the parts and key. Never gave it another thought until I saw this thread.
I guess I really have no opinion of the lock on mine because its the only s&w that I've owned (so far),
Note that if you ever need to have S&W work on the gun under warranty claim, it needs to go back to them with ILS installed. Therefore, best to hang onto the parts or even pass them along in any sale.
This may or may not be true. I called S&W CS they said each gun is evaluated on an individual basis. I asked if a gun with the IL removed would still be covered by the warranty. He said most likely yes. He said any modification would void the warranty. Even spring replacement. He was very vague about giving a definitive answer. He said that if a gun came in really buggered up by the owner; it wouldn't be covered. If a gun came in relatively clean without the IL it would be covered.