Home CMMG AR Takedown Pin swap without disassembly

AR Takedown Pin swap without disassembly

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This is one method to replace the AR Takedown Pin without removing the Castle Nut or Receiver Endplate.

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31 COMMENTS

  1. Thank you, Thank you, Thank you for this "how to" tip! I learned a new "trick" and I am ecstatic! A "properly" staked Extension Tube is a pain to remove and not good to "reuse" those parts? I am SO HAPPY to have learned something so incredibly useful today! And.. it looks just too easy? (I would however push the "old" pin out with a "slave pin" like others have mentioned to make installing the "new" pin a lot easier) BUT STILL GREAT INFORMATION! THANKS!! AND.. I stumbled on this video by pure accident??"

  2. I have a beautifully staked solgw lower with fwd controls buffer assembly that I didn’t want to ruin to add my ca compliant neutering maglock. This method saved ruining the work that was solgw assembled. I can easily switch between setups when I cross the border to shoot it the un-neutered way. Thanks again for sharing this.

  3. Not sure if you are still reviewing Comments, I have a Rugar AR556. There is no pin to hold this Rear Take down Pin in place. It just moves. I can't for the life of me see where this retaining pin might be located. Only other thing I can think of to do to keep this pin from falling out is to dent the end to spread it open so there is friction but that doesn't seem to be a very good idea or it would already be this way. other than taking it to the Gun Smith, any suggestions?

  4. Great video. I own a machine shop so modifying a hex key will be an easy task. But my issue is that my S&W M&P pin is VERY loose after only 300 rounds. Hole to pin clearance is about 0.035” and I do not know if that is specification, but the pin will just “fall out” even while the detent pin and spring are in place.

  5. Thanks! I was able to use the smallest jewelers flathead and use the other pin from the other side and it worked pretty quick! Appreciate the tutorial to give me an idea of where to start.

  6. Man that was awesome! I've never done take down pins before and I have a set on the way. Now I know what I need to do for the rear and have a plan for the front pivot pin. Thanks I'll be checking out some of your other videos.

  7. This vid help so much that I himmed and hawed far longer worrying about messing up, then it took to change the pin. Seriously, 30 seconds in and out. I slid a new 1/4" nonbusiness end of a drill bit in the hole and caught the pin from the other side, the just slid the new pin right back in. Super fast.

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