The Phase 5 Hex 2 pistol buffer 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. Both the Hex 2 pistol buffer tube and Hex2 pistol buffer tube kit include a castle nut, end plate and foam pad. The Hex 2 pistol buffer tube kit also includes a Phase 5 Enhanced Buffer Spring and carbine buffer.
AR-15, Issue:11, Page:042
Big Book Catalog, Issue:73, Page:056
Big Book Catalog, Issue:73, Page:070