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Pneumatic buffer vs spring

Discussion in 'GATE AR-15 Forum' started by old wanderer, Apr 2, 2011.

  1. old wanderer

    old wanderer

    Dec 22, 2008
    For many years I used a pneumatic unit instead of a spring behind the bolt of my HP AR15 I shot in competition. I also had a Tubbs weight in the back of the bolt. Both worked very smoothly. I quit shooting HP and LR about 6 years ago.

    I went and fired at a range and had problems getting the bolt returning to battery. Checked the pneumatic buffer, and found it no longer had any pressure.

    I am now shooting CQB in a AR15 with a A1 stock. I just finished a 2 day course where I ran through 1000 rounds. Boy did I find the squeak squeak squeak of that spring in the stock irritating.

    I am shooting a LMT 14.5" upper with a SJC compensator, so it is pretty steady.

    Do these units have a short life? (If so how long)

    Is there any advantage to using one of these units vs the squeaky spring?

    My old unit was adjustable, but there is no way I can see to recharge it.

    Are there any a
  2. Constructor

    Constructor Moderator

    Dec 10, 2009
    Everyone I know that has tried the hyd buffers has had one go bad, no one I know uses a hyd buffer now. For carbine courses and 3 gun many use a SSS or Tactical Springs extra power spring, lubed.