FEATURES
-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.