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1/25/2018 7:38:29 AM
Posted: 11/17/2001 11:18:31 PM EST
Quick question about my bolt and/or firing pin in my AR. I had to chamber a round earlier (odd noises outside, and wanted to feel safe investigating. It was nothing.) Afterward, I dropped the mag out, and racked the charging handle to remove the chambered round. Upon ejection, I picked up the round, and examined it. I noticed that the primer had a small dent in it, right where the firing pin would hit it if fired. Not a huge dent, or even one that I would liken to a used primer. It's just a small dent. Do I need to worry about this? I'm just curious if I could possibly have something wrong with my bolt assembly. Thanks for the help.

Link Posted: 11/17/2001 11:27:00 PM EST
Since the AR has a 'springless' firing pin, this is normal to have a 'dent' in an unfired primer.

Bushmaster (along with others) make a gauge for measuring the protrusion of the firing pin, if you're that concerned with it.
Link Posted: 11/17/2001 11:29:30 PM EST
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