The Phase 5 AR-15 Pistol Buffer tube is made from billet aluminum and features an ultra durable nitrile rubber foam pad for comfort. This version of the kit includes a mil-spec castle nut and endplate. The buffer tube is compatible with standard Mil-Spec carbine buffer and springs. The lower slot is machined to accept all mil-spec end plates and sling mounting accessories. The tube is compatible with the SIG SAUER Pistol Stabilizing brace ensuring a nice snug fit for no unwanted brace movement.

Specifications and Features:
Phase 5 Weapons Systems PDT-RED
Pistol Buffer Tube
Made from Billet Aluminum
Nitrile Rubber foam pad
SIG Sauer Pistol brace compatible
Mil-Spec parts
Red

Includes:
Pistol Buffer Tube
Castle Nut
End Plate

Fits:
AR-15 Pattern Lowers

Note: Here is the NRA's interpretation of the latest ATF letter regarding the use and legality of pistol braces.
  NRA Interpretation of Latest ATF Letter