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The Range
Rifle & Shotgun Discussion
Light Primer Strikes - advice?
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<blockquote data-quote="Perplexed" data-source="post: 2318112" data-attributes="member: 7157"><p>I forgot to post an update about the issue I was having with the light primer strikes; it turns out the folks suggesting a check of the firing pin were right. Previously, I had just shaken the bolt and felt the pin rattling back and forth like it's supposed to, and figured it was OK since I'd put less than 300 rounds through the upper before having the light strike issue. I went back and removed the firing pin, and surprise, surprise - there was a solid ring of carbon / grime on the flange of the pin. I couldn't believe how fast that ring had been laid down - that surplus 5.45 ammo is <strong>dirty</strong>! After removing the deposits, it was a while before I got back to the range to try the AR - with the Geissele trigger kit re-installed. The rifle ran just fine, with no FTF's or any other issues. So I just need to check the firing pin every couple hundred rounds, it seems. Still, a small price to pay when a full magazine of 5.45 ammo costs $6, compared to $12-13 for a mag of 5.56 ammo.</p></blockquote><p></p>
[QUOTE="Perplexed, post: 2318112, member: 7157"] I forgot to post an update about the issue I was having with the light primer strikes; it turns out the folks suggesting a check of the firing pin were right. Previously, I had just shaken the bolt and felt the pin rattling back and forth like it's supposed to, and figured it was OK since I'd put less than 300 rounds through the upper before having the light strike issue. I went back and removed the firing pin, and surprise, surprise - there was a solid ring of carbon / grime on the flange of the pin. I couldn't believe how fast that ring had been laid down - that surplus 5.45 ammo is [B]dirty[/B]! After removing the deposits, it was a while before I got back to the range to try the AR - with the Geissele trigger kit re-installed. The rifle ran just fine, with no FTF's or any other issues. So I just need to check the firing pin every couple hundred rounds, it seems. Still, a small price to pay when a full magazine of 5.45 ammo costs $6, compared to $12-13 for a mag of 5.56 ammo. [/QUOTE]
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Light Primer Strikes - advice?
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