Home CMMG AR-15 Build: Installing the Buffer tube

AR-15 Build: Installing the Buffer tube

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I’m using a Mil-Spec Palmetto State Armory receiver extension kit( the actual name is PSA Classic Premium M4 Stock Kit)
I also get asked a lot about what the difference is between mil-spec and commercial buffer tubes, click the following link for a diagram of the two:

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25 COMMENTS

  1. Excellent instruction. No other video talks about making sure the buffer tube is aligned and not crooked so the stock does not cant. Wish I could see which detent end is correct. In fact I wish someone made a video on detents and which ends go in first , so they are not backwards. Great video though!

  2. Bro, thank you. Im a noob here, new to this hobby and flipped through a lot of videos. You made is easy to follow directions. Nice palmetto buffer tube btw. I’m workin with a Frankenstein over here. Magpul stock, Anderson mftrg. Lower, and some other brand for the buffer tube assembly. Anyways thanks again.

  3. Good video But do you have Any Idea Why this "So Called" Mil Spec 6 position Stock Won't go on with out using a thin punch through the Top Hole to push down the lock pin to mount but as far as I can see No Way to Remove the Stock from the Tube?

  4. Pretty good vid…just a couple of things: 1) A bit easier to first Install the buffer tube far enough to hold the buffer retaining pin & spring in place, THEN drop in the take-down detent pin & spring and secure them. 2) If at all possible, cut AWAY from yourself when slicing open a package, or using a knife, in general (ask a Scoutmaster) ;-).

  5. Hello, I'm having a problem. I just bought an AR-15 (haven't even shot it yet). I decided to clean it and get familiar with breaking it down and reassembling it. I noticed that the retention pin is marring the buffer assemble (the piece that go's in the action spring)

  6. Millennial BOYS, you''''d be surprised, shocked to learn what other things MEN will do with the same tools mentioned. If a trip to say….even "Harbor freight" is too daunting for you….stay home in your mothers basement.

  7. every YouTube AR build vid 'yeah you have to buy a set of 500 specialized punches, a set of unobtanium hammers, and a couple different quantum jigs to build this thing' so far I have put everything in my lower with no more than tape, channel locks, and a screwdriver and everything is flush and went i. fine. I'm only building one I'm not spending hundreds in tools lol

  8. new guy here:  any issues with breaking your lower at the area between the buffer tube and the handguard.  I understand that they are the weak point of all lowers, and develop cracks after good use.  Im wondering if the torque applied to the castle nut would carry through and break the lower at that spot.   great vid, btw.

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