With a mid-length gas system, the M4 Dissipator from Windham Weaponry will quickly dissipate the gas transfer and significantly reduce recoil compared to standard gas system. The receiver is a flat top upper with a removable carry handle. It is constructed of forged 7075 T6 aircraft aluminum with a black hard coat anodized finish. The M4 profile 16 inch chrome lined barrel is finished off with the A2 flash suppressor. Features rear A4 dual aperture and front A2 post sights. Includes a hard plastic gun case, black web sling, and operator's manual.