Guntec USA Air Lite M-Lok Free Floating Handguard w/Monolithic Top Rail 15in Black. The goal is to distribute excellent quality at an economical value. Specifications for Guntec USA Air Lite M-LOK Free Floating Handguard w/Monolithic Top Rail: Manufacturer: Guntec USA Fabric/Material: T6 Aluminum Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Handguard Type: Free-Float Gun Rail: Monolithic Top Rail Weight: 12.4 oz Condition: New Inner Diameter: 1.34 in Height: 3.6 in Mount Type: M-LOK Features of Guntec USA Air Lite M-Lok Free Floating Handguard w/Monolithic Top Rail 3 M-LOK slots on 3 sides of front end of handguard. Rail system slides over barrel nut and is locked up against receiver with 6 screws. Proprietary barrel nut included. Tight fit up against receiver which allows for a monolithic top rail. Triangle / Diamond cuts throughout handguard to reduce weight. Package Contents: Guntec USA Air Lite M-Lok Free Floating Handguard w/Monolithic Top Rail GUNTEC USA GT-15MLK-AL: 15in Air Lite Series M-Lok Free Floating Handguard with Monolithic Top Rail Black