AR pistol buffer?

Iceman654

April 19, 2016 16:53

I'm running 7.5in 556 barrel with a standard pistol gas tube and a carbine buffer spring. I am planing on running standard 55gr ammo. My question is, is it worth the money to by a pigtail glass tube and run a standard weight buffer or to try and get the right buffer weight to work with the glass tube that's on there. Also do I need a different buffer for when I switch out to a 7.5 in 300blk barrel? Any help you can send me would be great thanks?

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  Mobuck

  April 19, 2016 17:16

  While I have heard of "pistol tubes" that require a different buffer and spring, all the ones I have use a carbine spring and buffer.
  Regarding the "glass(?) tube", you would be well advised to use an adjustable gas block instead of the pigtail tube.
  The adjustable gas block will let you correctly gas most any option you choose.

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  yoshmyster

  April 19, 2016 23:27

  Those pig tail gas tubes ain't cheap. The buffers also short (at least on mines) so no real up grades on that. I wonder if my JP Enterprise captured spring buffer will fit? Any ways the only thing you can do is get a heavy buffer.

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  dfletcher

  April 21, 2016 19:19

  I've built a bunch of AR pistols - 5.56, 300 AAC & X39. Carbine tube & buffer and spring have worked fine for me always. I'm sure more can be spent, maybe a few tweaks here & there. I'm not exactly an AR connoisseur, so long as they shoot well, accurate and reliable, and are sturdy I'm pretty content.

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