Purpose built AR's - Page 6

Purpose built AR's

This is a discussion on Purpose built AR's within the Featured Topics forums, part of the Welcome To DefensiveCarry.com category; Factory Specified Size Measures M16/AR-15 Maximum Headspace Made to the Colt factory's special dimensions for M16/AR-15 rifles. It measures the maximum factory acceptable headspace; an ...

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  1. #76
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    Factory Specified Size Measures M16/AR-15 Maximum Headspace Made to the Colt factory's special dimensions for M16/AR-15 rifles. It measures the maximum factory acceptable headspace; an essential check on guns that have seen extensive service or have been rebarreled.
    I see a lot of people using Field gages.

    From what I understand, they were used by military armorers in a time when they needed every available rifle that could shoot. For maximum accuracy, I use only the "go" gage as a field gage is way too long.
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  2. #77
    VIP Member Array Chuck R.'s Avatar
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    Quote Originally Posted by HotGuns View Post
    I see a lot of people using Field gages.

    From what I understand, they were used by military armorers in a time when they needed every available rifle that could shoot. For maximum accuracy, I use only the "go" gage as a field gage is way too long.
    Agreed, the "Field Gauge" is the final safety check as quite a few 5.56 and Wylde chambered guns will close on a standard N0-Go gauge and still be considered "safe" to fire. I've got one now I'm working on that failed a .223 No-Go gauge, but passed a Field Gauge. After correspondence with the bolt manufacturer and sending him gauge results, they sent me a new bolt that passes both.

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