FEATURES-ACOG® Riflescope-BAC Rifle Combat Optic (RCO) Scope w/ Green Chevron Reticle for the US Army's M150-Magnification: 4x-Objective Size: 32mm-Bullet Drop Compensator-Length: 7.3"-Weight: 16.2oz-Illumination Source: Fiber Optics & Tritium-Eye Relief: 1.5"-Housing Material: Forged Aluminum-Mount: Thumbscrew Mount