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The M4 carbine length drop-in quad rail is an easy to install upgrade for the basic carbine. It’s made of black anodized aircraft grade aluminum and is compatible with most direct impingement gas systems. When installing the two-piece design, no gunsmithing is required. The rails accept all standard Weaver/Picatinny 1913 accessories.
We won't be able to ship this item until we receive more stock. But don't worry, we've found a similar item that's ready to ship now.