• Material: Aluminum
  • Finish: Black
  • Weight:
    • Buffer Tube: 3.25 oz.
    • Buffer: ~5.15 oz.
  • Length: 10.12"


  • AR-15


  • 1x A2 Buttstock Extension Tube
  • 1x Standard .223 Rifle-Length Buffer Spring
  • 1x Standard Rifle Buffer


If you own an AR-type rifle, you will understand the importance of using the best quality equipment for your weapon. If you have ever built an AR15, the amount of time invested in the weapon as well as the cost of the equipment will tell you that it is no cheap matter to create a quality firearm.

One of the most important parts of an AR-type weapon is the buffer tube. Buffer tubes, also known as lower receiver extensions, can be attached to stocks and absorb the shock from the bolt after the rifle is fired. They also return the bolt to the firing position. Because this part of your weapon is so vital, you will want to be sure that it is high-quality and durable.

The Buffer Tube Assembly Kit by LUTH-AR contains everything you need for a successful replacement or first-time installation. The kit includes a standard rifle buffer, a Mil-Spec buttstock buffer spring as well as an A2 buttstock extension tube. Don’t settle for less than the best when it comes to your firearm! Whether your AR is for home defense, competitive shooting, law enforcement operations or pleasure trips to the range, this LUTH-AR assembly kit can help your weapon function as you need it to when you need it most.

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