16 4150 Mag Phos-coated barrel - 15 Slim M-LOK handguard - Gas system/specs may vary by caliber - M16 BCG - M4 Adjustable Stock - A2 Pistol Grip - A2 Birdcage flash hider - Optics SPECIFICATIONS: - Magnif ication lx - Objective Lens Diameter 30mm - FOV 60ft @ IOOyds w ith a 3.5 Eye Relief - Reticle MS (4MOA Dol 32MOA Circle) - (I MOA) Elevation & Windage Adjustments - 10 Brightness Levels - Parallax Free 8ft - Length 4.3 - Weight IOoz - Waterproof (IPXB) - Fog Proof Nitrogen Purged - Shock Proof (ASS SOCOM) - (Low) Picatinny Rail adaptor included - Battery type ( AAA ) - Lifetime Warranty