Phase 5 Weapon Systems Inc Hex-2 AR-15 Pistol Buffer Tube f/SB Mini Brace Black. Combining This Tube With The Sb Mini Brace Results In A Perfect Combo For Any Ar Type Pistol Build. The Hex-2 Is A Heavy-Duty Us Certified 7075 T7 Billet Aluminum Buffer Tube. Includes: Hex-2-Sbmini Buffer Tube Only Specifications for Phase 5 Weapon Systems Inc Hex-2 AR-15 Pistol Buffer Tubes f/ SB Mini Brace: Manufacturer: Phase 5 Weapon Systems Inc Color: Black Fabric/Material: 7075-T7 Billet Aluminum Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Length: 7.25 in Weight: 5.4 oz Features of Phase 5 Weapon Systems Inc Hex-2 AR-15 Pistol Buffer Tubes f/ SB Mini Brace CNC-machined 7075 T7 certified billet aluminum Hexagonal Pistol buffer tube. perfectly designed to fit the SB TACTICAL MINI BRACE. Machined lower slot and anti-tilt technology built into every tube. Package Contents: Phase 5 Weapon Systems Inc Hex-2 AR-15 Pistol Buffer Tubes f/ SB Mini Brace What firearm models does the manufacturer say Phase 5 Weapon Systems Inc Hex-2 AR-15 Pistol Buffer Tubes f/ SB Mini Brace is compatible with? The manufacturer says that Phase 5 Weapon Systems Inc Hex-2 AR-15 Pistol Buffer Tubes f/ SB Mini Brace is compatible with AR-15Phase 5 Weapon Systems Inc HEX-2-SBMINI: Hex-2 AR-15 Pistol Buffer Tube f/SB Mini Brace Black