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The Range
Handgun Discussion
XD firing pin block operation
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<blockquote data-quote="ljb2of3" data-source="post: 1402265" data-attributes="member: 13873"><p>Hey all, question for anyone who knows the inner workings of an XD.</p><p></p><p>Today during the IDPA match out at Oil Capital I had a failure to fire happen four times. Three of the times I just racked the slide to clear and went on, the fourth time I instinctively pulled the trigger again and it went bang. All three that I ejected didn't even have their primers dented. The working theory was that my grip was off and thus I wasn't depressing the grip safety far enough to fire. Which might make sense, my hands were freezing and I was under the stress of a match, which is new. </p><p></p><p>Now the odd part... between this gun (new, still less than 200 rounds) and rentals in the past few months I've put at least 300 rounds though an XD prior to the match and never had an issue with my grip. Now that I'm home I've been playing with my grip during dry fire and I have to really try before getting my grip far enough off to not engage the grip safety. Also, when the grip safety isn't engaged, it doesn't go click. I am 99.999% certain that during the match I felt it go click every time.</p><p></p><p>So, here is my crazy theory: On the first trigger pull the sear releases the firing pin but the firing pin block doesn't get pushed quite out of the way... the pin drops part of the way, producing the click I felt, and on the second pull, the block is pushed completely out of the way and the pin goes ahead and drops the rest of the distance and goes boom.</p><p></p><p>Am I crazy <img src="/images/smilies/screwy.gif" class="smilie" loading="lazy" alt=":screwy:" title="Screwy :screwy:" data-shortname=":screwy:" /> and just need to work on my grip some more, or is this possible? Got any other explanations?</p><p></p><p>Poking around in the slide, this already looks impossible, since the firing pin isn't under pressure when it is against the block... <img src="/images/smilies/doh.gif" class="smilie" loading="lazy" alt=":doh:" title="Doh :doh:" data-shortname=":doh:" /> Just wondering what everyone else thinks.</p><p></p><p>-Landy</p></blockquote><p></p>
[QUOTE="ljb2of3, post: 1402265, member: 13873"] Hey all, question for anyone who knows the inner workings of an XD. Today during the IDPA match out at Oil Capital I had a failure to fire happen four times. Three of the times I just racked the slide to clear and went on, the fourth time I instinctively pulled the trigger again and it went bang. All three that I ejected didn't even have their primers dented. The working theory was that my grip was off and thus I wasn't depressing the grip safety far enough to fire. Which might make sense, my hands were freezing and I was under the stress of a match, which is new. Now the odd part... between this gun (new, still less than 200 rounds) and rentals in the past few months I've put at least 300 rounds though an XD prior to the match and never had an issue with my grip. Now that I'm home I've been playing with my grip during dry fire and I have to really try before getting my grip far enough off to not engage the grip safety. Also, when the grip safety isn't engaged, it doesn't go click. I am 99.999% certain that during the match I felt it go click every time. So, here is my crazy theory: On the first trigger pull the sear releases the firing pin but the firing pin block doesn't get pushed quite out of the way... the pin drops part of the way, producing the click I felt, and on the second pull, the block is pushed completely out of the way and the pin goes ahead and drops the rest of the distance and goes boom. Am I crazy :screwy: and just need to work on my grip some more, or is this possible? Got any other explanations? Poking around in the slide, this already looks impossible, since the firing pin isn't under pressure when it is against the block... :doh: Just wondering what everyone else thinks. -Landy [/QUOTE]
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XD firing pin block operation
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