Guntec USA AIR-LOK M-LOK Compression Free Floating Handguard With Monolithic Top Rail. 5in Cerakote Flat Dark Earth. AIR-LOK Series M-LOK Compression Free Floating Handguard With Monolithic Top Rail (Flat Dark Earth) Specifications for Guntec USA AIR-LOK M-LOK Compression Free Floating Handguard With Monolithic Top Rail: Manufacturer: Guntec USA Color: Flat Dark Earth Finish: Cerakote Fabric/Material: T6 Aluminum Gun Make: AR Platform Gun Model: AR-15 Handguard Length: 5 in Gun Rail: Picatinny Weight: 6.8 oz Inner Diameter: 1.32 in Height: 2.3 in Features of Guntec USA AIR-LOK M-LOK Compression Free Floating Handguard With Monolithic Top Rail M-LOK Slots On 3 Sides of Handguard (Bottom Left & Right Sides) AIR-LOK Series Compression Lock Down Design Rail Slides Over Barrel Nut And Is Compressed Down Against Receiver With 4 Screws Tight Fit Up Against Receiver Which Allows For A Monolithic Picatinny Top Rail Triangle / Diamond Skeletonized Cuts Throughout Handguard to Reduce Weight Heavy Duty Package Contents: Guntec USA AIR-LOK M-LOK Compression Free Floating Handguard With Monolithic Top Rail Proprietary Barrel Nut Guntec USA GT-5ALC-FDE: AIR-LOK M-LOK Compression Free Floating Handguard With Monolithic Top Rail. 5in Cerakote Flat Dark Earth