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Thread: replacing stock on Colt M4

  1. #11
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    Quote Originally Posted by JChops View Post
    Sounds like he wants to swap stocks, not tubes.

    mrtke423, you can actually pull the lever on the bottom of your Colt M4 stock in the opposite direction as you would normally when you adjust it, and pull it off the rear of your rifle.

    So you basically want to do this:

    1. Pull down on the front of the stock lever—don't be afraid to pull with some force.
    2. Slide the stock off the rear of the tube as you are pulling it down.

    You can slide your new stock on the extension in the opposite way, without removing the factory staking or taking off the tube.
    This is what I was wondering. Unless the OP is going to an A1/A2 or UBR type stock there is no reason to remove that high quality Colt buffer tube.

  2. #12
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    Admittedly im not very mechanically inclined. About the only thing i can do on my own gun is clean it and swap stocks. other than that im pretty much lost. That being said dont kill me me for asking but all those pictures in the thread look the same to me. I noticed that some of the notches lined up but thats it. what am i missing? Sorry for derailing this thread

    Quote Originally Posted by Rmplstlskn View Post
    Colt STAKES their castle nuts, as they should do... Look closely at the inside (closest to charging handle) of the castle nut. You will see two or three little dimples on the corner edge. See if the plate the nut holds in place has been staked. You will need a small punch to move that staking out of the dimple. Once the staking is removed it should unscrew without too much effort...

    Here is a thread about staking... Removing the stake is often trickier...
    Staking Comparison

    Rmpl

  3. #13
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    Quote Originally Posted by philipeggo View Post
    Admittedly im not very mechanically inclined. About the only thing i can do on my own gun is clean it and swap stocks. other than that im pretty much lost. That being said dont kill me me for asking but all those pictures in the thread look the same to me. I noticed that some of the notches lined up but thats it. what am i missing? Sorry for derailing this thread
    Look closely at the notches facing the receiver. Some have metal from the receiver plate displaced into them a varying degrees, and some do not.

  4. #14
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    Quote Originally Posted by philipeggo View Post
    Admittedly im not very mechanically inclined. About the only thing i can do on my own gun is clean it and swap stocks. other than that im pretty much lost. That being said dont kill me me for asking but all those pictures in the thread look the same to me. I noticed that some of the notches lined up but thats it. what am i missing? Sorry for derailing this thread



    You are looking for metal from the end plate being displaced into the little notches on the castle nut. The displaced metal keeps the castle nut from rotating off. The castle nut should be torqued enough it wont come off on its own but staking is a secondary measure to ensure the castle nut does not loosen.


    You can use a punch, center punch, or really anything that will 'smash' metal from the end plate into the notches on the castle nut. I personally use a small nail punch and a light ball peen hammer to do mine.

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