Bravo Company Mfg. BCM Pistol Receiver Extension

Pistol Receiver Extension Kit-Buffer Tube-For AR15 Pistols -For your AR15 M16 M4 Pistol Lower Receiver. Pistol Receiver extension (buffer tube) 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.