I had an annoying and persistent problem with my Colt Match-Target, that slowly worsened over time. Every 30 or so rounds the hammer pin would slide out and allow the hammer to bind. Certainly couldn't allow that to continue, so I staked the pin into place with a small round pin punch. One small dent on each side of the lower receiver to keep the pin in place. It defiantly improved reliability, but did I damage the value. My camera is on the fritz, so no pics available.
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