IMI Defense M4X Overmolded Polymer Grip FDE. Available in color combinations. Specifications for IMI Defense M4X Over Molded Pistol Grip: Manufacturer: IMI Defense Finish: Matte Gun Make: AR Platform Gun Type: Rifle Gun Model: M16 M4 AR-15 Material: Polymer Condition: New Fabric/Material: Polymer Features of IMI Defense M4X Over Molded Pistol Grip Made of high-quality fiber-reinforced polymer compound core overmolded with anti-slip added friction rubber surfaces Very slim design Highly durable Perfect for tactical rifles Package Contents: IMI Defense M4X Over Molded Pistol Grip What firearm models does the manufacturer say IMI Defense M4X Over Molded Pistol Grip is compatible with? The manufacturer suggests that IMI Defense M4X Over Molded Pistol Grip is compatible with AR-15 M4 M16IMI Defense IMI-ZG107FDE: M4X Overmolded Polymer Grip FDE