Phase 5 Tactical Hex-2 Pistol Buffer Tube

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Phase 5 Tactical Hex-2 Pistol 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
Manufacturer Phase 5 Tactical
Finish No
Barrel Length No
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No
Item Category (only for Taxify) No