Samson 4in Accessory Rail M-LOK Black. All Samson M-LOK Accessory Rails are designed per M-LOK spec and feature a beveled end to provide a smooth transition to the handguard. Accessory rails include all necessary hardware for mounting to M-LOK slots and are a great addition to any M-LOK version of Samson handguard. 2" Accessory rail kit includes two rails. Specifications for Samson Accessory Rail M-LOK: Manufacturer: Samson Color: Black Fabric/Material: 6061-T6 Aluminum Gun Rail: Accessory Rail Gun Type: Rifle Weight: 0.95 oz Included Accessories: Standard Quantity: 1 Mount Type: M-LOK Handguard Length: 3.42 in Features of Samson Accessory Rail M-LOK: Material: 6061-T6 Aluminum Finish: MIL-A-8625 type III class 2 anodizing Package Contents: Samson Accessory Rail M-LOK Samson 04-01007-01: 4in Accessory Rail M-LOK Black