Tippmann Arms M-LOK Aluminum Free Float Handguard 5.5in Black. The M-LOK design allows mounting of bipods grips lights or lasers and optics. Free float handguards are known to improve accuracy. The accuracy of the free floating handguard comes from the fact that the handguard doesnt touch the barrel it is mounted directly to the upper receiver. This allows the barrel to float and gives better harmonics resulting in slightly better accuracy. The accuracy difference is especially evident when using grips or bipods on the handguard. When you rest a rifle on a bipod that is attached to the barrel (or a drop-in handguard) the bipod will create force that can slightly warp the barrel. This small amount of warping can provide fairly significant accuracy issues down the range. But with a free float handguard you can put all kinds of force on the handguard and it won't affect the barrel whatsoever. Specifications for Tippmann Arms M-LOK Aluminum Free Float Handguard: Manufacturer: Tippmann Arms Color: Black Finish: Anodized Black Fabric/Material: Aluminum Gun Make: AR Platform Gun Rail: Picatinny Weight: 5.1 oz Mount Type: M-LOK Features of Tippmann Arms M-LOK Aluminum Free Float Handguard Comes with the M4-22 Barrel nut (smaller ID than the AR-15 Barrel Nut). Increased accuracy. Full length Picatinny rail. Package Contents: Tippmann Arms M-LOK Aluminum Free Float Handguard Tippmann Arms A201009: M-LOK Aluminum Free Float Handguard 5.5in Black