The Reptilia 13" M-LOK Handguard features patented turn buckle technology and is engineered for AR-15/M4 upper receivers with a durable FDE (Flat Dark Earth) anodized finish.Reptilia 13" M-LOK Handguard in FDEPatented turn buckle mounting technologyBillet 7075-T6 aluminum constructionMIL-STD Type III Class 2 hard anodize finishM-LOK accessory mounting systemCompatible with all M4 upper receiversIncludes required barrel nut and hardwareMade in the USAPerfect for tactical applications competitive shooting or custom AR-15 builds requiring a lightweight durable handguard with versatile M-LOK mounting capabilities and premium American manufacturing quality.