I had that happen on my Glock with the little spring that holds tension on the slide keeper. I was lucky and found mine because I heard it hit into one of my open Griswold Dutch ovens. Very lucky!

Pap
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Mike Allen
RKCC-CM-086
True West Magazine Maniac
Randall Collector
Behring Made Collector
Ruana Collector
Glock Fan
NRA- Life Member since 1975
mikenlu99@aol.com