Presma AR-15 M-LOK Free Float Handguard 7 in Red. 56 Uppers 12". 12" length free float rail mount with Picatinny Top rail and M-LOK slot system. Steel barrel nut included. CNC machined from Quality aluminum and black anodized. Super light weight only 11.7 oz with barrel nut. Specifications for Presma AR-15 M-LOK Free Float Handguard: Manufacturer: Presma Gun Make: AR Platform Gun Model: AR-15 Features of Presma AR-15 M-LOK Free Float Handguard A true free float rail which connects only at the barrel nut. Since the rail doesn't touch the barrel shooting accuracy is improved in comparison with two piece rails when used with grips / bipods that can flex the Steel barrel. Includes barrel nut and screws. Package Contents: Presma AR-15 M-LOK Free Float Handguard Barrel nut fixing hardware Presma MMARE7R: AR-15 M-LOK Free Float Handguard 7 in Red