Originally Posted By: GEAR MONGER 2
I do have a bit of a problem with the new .556. The firing pin is dinging the primers. This thing is new , and just finished yesterday. I chambered 10 rds and all but one had a mark from the firing pin. A high primer will be a slam fire for sure. Ther has to be a fix

Normal.
M16/AR15 has a floating firing pin.
It's normal to see a light tap on the primer after letting the bolt fall.

The only "fix" would be to ride the charging handle home and then hit the FA (forward assist) to ensure that the bolt is in battery.
Never admit to "riding the charging handle".

smile
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