The M4 carbine length drop-in quad rail is an easy to install upgrade for the basic carbine. Made of black anodized aircraft grade aluminum and compatible with most direct impingement gas systems. When installing the two-piece design no gunsmithing is required.
• Black anodized aircraft grade aluminum
• Accepts all standard Weaver / Picatinny 1913 accessories
• Two-piece drop-in design
• Compatible with most carbine length direct impingement gas systems
• No gunsmithing required
