The Fortis Manufacturing Rev II free float handguard delivers superior modularity and performance with its 6.7" M-LOK rail system and black anodized finish.Fortis Rev II Free Float Rail System - 6.7"Continuous Picatinny top rail for optics and accessoriesM-LOK attachment points at 3 6 and 9 o'clock positionsDurable black anodized aluminum constructionFree float design for enhanced accuracyBarrel nut sold separatelyIdeal for tactical applications competitive shooting and custom rifle builds requiring reliable accessory mounting and improved barrel harmonics.