• Mil-Spec pistol buffer tube
  • QD socket at the rear of the tube
  • Includes Spike's Tactical ST-9X heavy buffer
  • Electro polished 17-7 Stainless buffer spring


  • Material:
    • Buffer Tube: 7075-T6 Aluminum
    • Buffer Spring: 17-7 Stainless Steel
    • Buffer: 303 Stainless Steel
  • Weight: 15.28 oz. (Including buffer, spring, castle nut and end plate)
  • Buffer Tube Length: 7.625"
  • Outer Diameter: 1.25"


  • 9mm AR platform


  • 1x Mil-Spec Pistol Buffer Tube
  • 1x Latch Plate
  • 1x Castle Nut
  • 1x Electro Polished Buffer Spring
  • 1x ST-9X Heavy Buffer


When you start any build, you have to pick the individual components you’re going to use. For the most part, you can have it your way, but it’s easy to run into incompatibility issues, or problems with weapon function if all of your components don’t work together properly. These problems can get out of hand if you’re working on a less common build like the 9mm AR pistol. Wing Tactical offers kits so you can concentrate on the build instead of worrying about parts choices. Spikes Tactical AR 9mm Pistol Buffer Tube Assembly brings together a 9mm Heavy Buffer, Spikes high-quality buffer spring, and Spikes own precision machined aluminum buffer tube. Using this assembly will give you the performance you want without the hassle of trial and error.

Spikes Tactical 9MM Pistol Buffer

The ST-9X 9mm stainless steel heavy buffer is a purpose-built buffer for 9mm AR applications. It features a longer form that helps to mitigate problems that have been seen frequently with the use of standard length buffers, involving breakage of bolt catches. Using the ST-9X buffer along with the other components in Spikes buffer kit will allow your system to function smoothly and help reduce blowback too.

Spikes Buffer Spring

This buffer spring is a favorite of builders and those making upgrades as well. Now, by including it in the 9MM pistol buffer tube assembly, Spikes has given you the benefit of a quality electro-polished 17-7 stainless spring. It’s long service life and smooth, predictable function will make your build function with ease, cycle after cycle.

Spikes Pistol Length Buffer Tube

Spikes Aluminum billet pistol buffer tube is a quality component purpose designed and machined for AR pistol applications. It’s manufactured with aerospace quality aluminum for lightweight strength you can count on. The sleek black hard anodized coating on this buffer tube gives the buffer assembly a premium finish that will stand up to any abuse you dish out and keep looking awesome.

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