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Thread: ar 15 headspace

  1. #1
    Gunco Member glakar's Avatar
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    Default ar 15 headspace

    im considering changing my carry handle a2 into flattop my question is would i have to reset the headspace or is it pretty much just swapping parts over? thanks in advance

  2. #2
    Gunco Member ammoboy2's Avatar
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    If it is the same barrel and bolt on a different upper it will not effect the headspace since the bolt lugs are a part of the barrel.

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    gunco irregular moleman's Avatar
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    It will not effect your headspace to swap from an A2 upper to a flat top. The headspace is set by the barrel extension which is screwed onto the back of the barrel. You won't be taking this off and as long as you use the same bolt/barrel when you put it back together you'll be fine. Its an easy swap. If you have any questions on how its done just ask.

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    Gunco Member glakar's Avatar
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    great thanks guys normally im an ak guy but ive started bulding ar now so ill likely need help

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