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The RK-M4 Fore End Rail Kit allows for quick attachment of three rails to the forward end of the AR15, M4 and M-16 rifles. The kit enables the attachment of two accessories to the upper forearm at 1:30 and 9:30 and one to the bottom 6:00 rail. It is very lightweight, especially compared to metal railed handguards, and reversable to have one rail on top with two below. The rail kit locks securely into place using standard fore end holes.