With so few details, I'm just guessing at this point, but since it's in for a "cleaning", it's probably filthy and the proper function of the cylinder stop and/or c.s. spring have been compromised, either by crud or old lubricants. (or both)
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Ret. LE, FA Instr, S&W Armorer
Last edited by armorer951; 04-21-2017 at 01:00 PM.
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