Bravo Company MFG AR15 Pistol Receiver Extension Kit w/Buffer Tube/Spring/Hardware. Bravo Company MFG crafted these AR15 Buffer Tubes from hard-anodized 7075 T6 aluminum to create rugged components that are highly-resistant to corrosion and wear. This Bravo Company Complete Pistol Receiver Extension Kit works with carbine buffer and actions springs and it is compatible with your ATF-compliant SigTac SB15 type pistol stabilizing brace. Get the Bravo Company BCM PISTOL Receiver Kit for AR15 Pistols to expand the capabilities of your firearm. Specifications for Bravo Company MFG AR15 Pistol Receiver Extension Kit w/Buffer Tube/Spring/Hardware: Manufacturer: Bravo Company MFG Finish: MIL-A-8625F Type III Class 2 Hard Coat Anodized Fabric/Material: 7075-T6 Aluminum Gun Model: M4 M16 AR-15 Gun Type: Rifle Length: 7.25 in Weight: 2.9 oz Additional Features: This kit is compatible with your ATF compliant SigTac SB15 type pistol stabilizing brace. Included Accessories: Buffer Assembly Carbine Action Spring Carbine Lock Nut (Castle) M4 BCM GUNFIGHTER QD Receiver End Plate Condition: New Gas System Length: Pistol Length Outer Diameter: 1.2 in Features of Bravo Company MFG AR15 Pistol Receiver Extension Kit w/Buffer Tube/Spring/Hardware: Machined from 7075T6 Hard Coat Anodized per Mil-A-8625F Type III Class 2 1.2 outside diameter Will fit your ATF compliant SigTac SB15 type pistol stabilizing brace Works with carbine buffer and action springs Package Contents: Bravo Company MFG AR15 Pistol Receiver Extension Kit w/Buffer Tube/Spring/Hardware Bravo Company MFG BCM-PISTOL-RE-KIT: AR15 Pistol Receiver Extension Kit w/Buffer Tube/Spring/Hardware