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The Range
NFA & Class III Discussion
M-16 Sear question
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<blockquote data-quote="CAR-AR-M16" data-source="post: 993632" data-attributes="member: 204"><p>The auto sear is in the lower receiver (see pic below) and it holds the hammer back until the bolt just closes. The sear trip that came with your .22 kit is designed to do exactly what it is named, it trips the auto sear. The bottom portion of the auto sear catches and holds the hook on the hammer until the bolt just closes. At that point the sear trip (or the portion of the M16 bolt carrier in a 5.56 rifle) pushes forward on the top of the auto sear which pivots the bottom portion of the auto sear away from the hammer hook and allows the hammer to fall. In a semi auto rifle the sear trip does nothing since there is no auto sear to trip. Hope that helps.</p><p></p><p>[ATTACH=full]72867[/ATTACH]</p><p></p><p>You can see the hook portion of the M16 hammer in the pic below (it is the portion sticking out at the top right of the M16 hammer).</p><p></p><p><strong>[Broken External Image]</strong></p></blockquote><p></p>
[QUOTE="CAR-AR-M16, post: 993632, member: 204"] The auto sear is in the lower receiver (see pic below) and it holds the hammer back until the bolt just closes. The sear trip that came with your .22 kit is designed to do exactly what it is named, it trips the auto sear. The bottom portion of the auto sear catches and holds the hook on the hammer until the bolt just closes. At that point the sear trip (or the portion of the M16 bolt carrier in a 5.56 rifle) pushes forward on the top of the auto sear which pivots the bottom portion of the auto sear away from the hammer hook and allows the hammer to fall. In a semi auto rifle the sear trip does nothing since there is no auto sear to trip. Hope that helps. [attach=full]72867[/attach] You can see the hook portion of the M16 hammer in the pic below (it is the portion sticking out at the top right of the M16 hammer). [b][Broken External Image][/b] [/QUOTE]
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