IMI Defense 4 Notch M-Lok Polymer Rail Section w/Integrated QD Port Black. Available in Black and Two Camouflage Colors: O.D. Green and Desert Tan. Captive Allen mounting screws Tight fit profile alignment stud for solid attachment and recoil force absorbent. Mil-Spec 1913 Picatinny rail profile Compatible with Magpul M-LOK Made in Israel Specifications for IMI Defense 4 Notch M-LOK Rail Section w/ Integrated QD Port: Manufacturer: IMI Defense Finish: Matte Fabric/Material: Polymer Gun Rail: M-LOK Gun Type: Rifle Gun Make: AR Platform Gun Model: AR-15 Length: 5 in Weight: 23 g Features of IMI Defense 4 Notch M-LOK Rail Section w/ Integrated QD Port Made from high quality temperature resistant polymer compound Captive Allen mounting screws Tight fit profile alignment stud for solid attachment and recoil absorption Mil-Spec 1913 Picatinny rail profile Compatible with M-LOK Package Contents: IMI Defense 4 Notch M-LOK Rail Section w/ Integrated QD Port IMI Defense IMI-PMK4QBLACK: 4 Notch M-Lok Polymer Rail Section w/Integrated QD Port Black