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Thread: M4 Jammed in Battery

  1. #11
    Join Date
    Nov 2007
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    S.E. Virginia
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    Quote Originally Posted by D. Christopher View Post
    After you got it out were you able to tell what caused the jam? Was the LBS deformed? Sounds like you know this now but in the future, drop in the LBS, point the muzzle down, grab the charging handle and slowly ride it in until closed. What brand LBS is it?
    Why not just assemble the upper onto the lower without the BCG while using the LBS?

  2. #12
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    Aug 2007
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    Quote Originally Posted by Crow Hunter View Post
    We've all done our share. I know I have.
    I, too am no stranger to that age old question, "Why in the @$*& did I do that?"

  3. #13
    Join Date
    Sep 2010
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    Quote Originally Posted by Crow Hunter View Post
    ...
    My bore sighting has always been clamping a gun in a vice and looking through the barrel at a spot and adjusting the crosshairs/rear rings to that spot.

    Been to cheap to by a LBS.
    X2 on the visual bore site, usually within 3-4" at 100 yards

    sounds like a cool tool to have though...

  4. #14
    Join Date
    Nov 2008
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    Quote Originally Posted by Stan9106 View Post
    Why not just assemble the upper onto the lower without the BCG while using the LBS?
    The LBS needs to be firmly seated in the chamber to ensure accuracy. The procedure is identical to chambering an empty shell. While you could pull the BCG, it's an extra step that isn't needed and allows a greater chance of inaccuracies to be introduced. I generally just clear the weapon, lock the BCG to the rear, point the muzzle down, drop in the LBS, and ride the bolt home. It takes about 5 seconds and the weapon can be handled normally, including muzzle up without fear that the LBS isn't properly seated or will fall out if you raise the muzzle. The weapon can be cleared normally and can be ready for action in less than 5 seconds as well.

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