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Thread: Post sample Ar10

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    UZI Talk Life Member
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    Post sample Ar10

    My new machine gun buddy is old time SOT and itís not his primary business. He doesnít use gun forums and is struggling to finish his AR10 build. He drilled the 3rd hole in the same relative position as his m16 but alas the sear was too short. I pointed this out for him and made a longer sear to engage the rear of the bolt.

    Now heís getting crazy light strikes in full auto. His timing is definitely off. Any suggestions for him moving forward?

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    Registered User timkel's Avatar
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    Bolt bounce? Did he try a heavier buffer?

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    Extending the sear trip would move the trip point further back. There is a tutorial for timing a DIAS in the center of this page http://quarterbore.com/nfa/dias.html which could be used to check the auto sear timing.

    Scott

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    Quote Originally Posted by timkel View Post
    Bolt bounce? Did he try a heavier buffer?
    Scratch what I said about bolt bounce, just timing

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    Or is there a specific ar10 sear he can buy from someone? I’d be happy to connect him with someone knowledgeable

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    The tutorial I linked to gives how to test timing. Then he could adjust the release point until the timing matched the specs listed. If the M16 auto sear was extended, I would think that that extension could be bent forward or back to adjust the timing.

    Scott

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    Light strikes means hammer following like the auto sear isn’t even there.

    Timed too early.

    The sear is being tripped before the bolt is fully forward.

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    Quote Originally Posted by A&S Conversions View Post
    The tutorial I linked to gives how to test timing. Then he could adjust the release point until the timing matched the specs listed. If the M16 auto sear was extended, I would think that that extension could be bent forward or back to adjust the timing.

    Scott
    I sent my buddy les that article. Thanks Scott, I think that may solve his problem

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