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Phase 5 Tactical Hex-2 Pistol Buffer Tube

Buffer Tube


The Phase 5 Hex-2 is an AR type Pistol Buffer Tube. This tube has been specifically designed to utilize the Sig Sauer SB15 Pistol Stabilizing Brace. The Hex-2 is a heavy duty USA certified 7075 T7 billet aluminum pistol buffer tube with the versatility to use the Phase 5 nitrile Foam Pad (included) or the SB15 Pistol Stabilizing brace (sold separately).

Working closely with Sig Sauer the Phase 5 Hex-2 was a special project that involved a number of firearms instructors, law enforcement professionals and AR Pistol enthusiasts alike. While asking questions along the way and updating the design based on the recommendations given by all; the Hex-2 has become the perfect component for any AR pistol build.

The Hex-2 even in its most basic package includes a castle nut, end plate, and foam pad.

Length of pull (LOP) measurement with Sig Stabilizing Brace installed: Measured from the back of the lower receiver End Plate to the very end of the Sig Brace is 9 1/2 inches.


  • CNC Machined 7075 T7 Billet Aluminum

  • Overall Length: 7 3/8 inches

  • Weight: 6.04 oz

  • Included: Phase 5 SB15 Accessory Plug

More Information
Product Type Buffer Tube
Manufacturer Phase 5 Tactical
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