Long awaited replica of the M500 integrated tactical handgrip for the M4 rifle. While the genuine version sells for several hundred dollars, this replica won't burn a whole through your wallet. Comes with high intensity bulb and rubberized toggle switch for easy activation. Foregrip large enough to accommodate the standard 8.4v 600mah small battery, or even the upgrade 9.6v 1700mah SD Type custom battery to drive high power upgrades. Quality built with ABS plastic. Flashlight housing is all metal with heat sync. 2 lithium batteries are included. Easy to install and gives your M4 a truly tactical look! Battery is not included.