COMPLETE 5.56 M4 UPPER ASSEMBLY W/ 1:8 TWIST BARREL, 12″ KEY MOD HAND GUARD, SS ADJUSTABLE GAS BLOCK & GAS LINE, & PHANTOM COMPENSATOR

Product Description

Complete 5.56 M4 Upper Assembly with 1:8 Twist Barrel, 12″ Key Mod Hand Guard, Stainless Steel Adjustable Gas Block & Gas Line, & Phantom Compensator/Muzzle Brake – Each purchase is for one ASP Supply 5.56 M4 upper assembly with various parts as described and pictured.  Does not include bolt carrier group.