The Ruger Harrier is a completely re-engrinnered line of modern sporting rifles that represents the latest evolution in AR-Pattern firearms. The upper and lower receivers are machined to mil-spec dimensions from 7075 forged aluminum and type III hard coat anodized. The lower includes a tension screw to eliminate play between upper and lower receivers. The full-length handguard includes Magpul M-Lok slots along the 3, 6, and 9 o'clock positions with 8 intermediate slots on the muzzle end. The Nitrided bolt carrier group features a staked gas key. FeaturesA2 Pattern Pistol GripM4 Style StockMil-Spec Buffer TubeFree Float M-Lok HandguardForward AssistIncludes (1) 30-Round PMAG