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Posted: 3/9/2006 12:25:35 PM EDT
Does the bolt rotate via the cam pin and lock up before the carrier stops its forward travel?
Or does the carrier impact the back of the bolt and help it lock up?

thanks
Link Posted: 3/9/2006 1:11:33 PM EDT
[Last Edit: 3/9/2006 1:17:01 PM EDT by M4Madness]
www.ar15.com/forums/topic.html?b=3&f=66&t=266108

EDIT: Well, the above link didn't really explain this aspect. The bolt's locking lugs pass through the barrel extension's locking lugs. As the bolt carrier continues forward, the bolt is rotated by the cam pin and locks into place.
Link Posted: 3/10/2006 2:49:20 AM EDT

Originally Posted By hk940:
Does the bolt rotate via the cam pin and lock up before the carrier stops its forward travel?
Or does the carrier impact the back of the bolt and help it lock up?

thanks



This may help.

Press the play arrow on the bottom left corner

M4 action cylcle animation

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