Cross Machine Tool

Cross Machine Tool Extended AR-15 Pistol Buffer Weight - 7.7 Oz.

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Cross Machine Tool Extended AR-15 Pistol Buffer Weight - 7.7 Oz.

Pistol Caliber AR-15s are extremely fun and useful but they come with their own issues due to the nature of the direct blow back system. One of the easiest ways to remedy an unreliable PCC is to install a heavier buffer weight designed specifically for the direct blow back gas system. The Cross Machine Tool AR-15 pistol caliber buffer weighs 7.7 ounces to help slow down the bolt as it cycles to ensure that it extracts and ejects the spent casing properly. The heavier weight also helps to prevent it from slamming into the rear of the receiver extension tube which can increase wear on your parts. Not only does the increased weight help with reliability, it can also help reduce the harsh recoil typical with pistol caliber direct blow back systems. The extended length of this buffer is designed to be use with carbine length buffer tubes and does not require a spacer. If you are building a 9mm AR-15, eliminate the possibility of reliability issues right from the start with the CMT extended length pistol buffer weight.


  • 7.7 ounce extended length
  • Designed for carbine length buffer tubes
  • Only for pistol caliber direct blowback systems
  • Solid stainless-steel construction
  • Increases reliability while decreasing felt recoil
  • No buffer spacer required
  • Can be used with standard carbine springs

Cross Machine Tool Co., utilizing the latest machining technologies, offers high quality products that you’ll be excited to own. Cross Machine Tool is a veteran owned business that takes pride in manufacturing products you will own. CMT products exceed military standards, so you can build the best AR style rifle possible.

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