
Originally Posted by
Snake RAH
Light primer strikes (not the marking of the primer from chambering) can be caused by:
1) blunted firing pin or firing pin that falls below the minimum measurement on a firing pin protrusion gauge
2) REALLY excessive headspace (another clue of excessive headspace would be wandering groups)
3) hard primer
4) deep seated primer
5) weak or broken hammer spring
6) improperly assembled hammer spring
I've only had one gun with light primer strikes, and it was a M1 carbine with excessive headspace. I've shot a good amount of rounds through my AK clone, AR10, and AR15s, and have not experienced light primer strike.
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