The Monstrum S3940-M Tactical Rifle Scope is a compact scope designed for close to mid range shooting, with high optical clarity at between 3 to 9 times magnification and a 40mm objective diameter. It features a clean yet functionally designed illuminated glass mil-dot reticle, allowing for on-the-fly range estimation and long distance targeting, which can be viewed in red or green illumination and in multiple brightness intensities, or without illumination, for a suitable sight picture regardless of lighting or environment. The scope is also equipped with an integrated, independently operated, red laser sight for fast and flexible acquisition of close quarter targets. The scope has an integrated mount that secures quickly to any Weaver or Picatinny 1913 rail equipped flat top rifle. Crafted from aircraft grade aluminum, the scope is both lightweight and sturdy, with a sealed, weatherproof design. It is 8.5 Inch in length, 3 Inch in width, 2.5 Inch in height and 1.2 pounds in weight. It has a Field of View at 100 yards of 37.5(at 3x)-12.4(at 9x) feet, an eye relief of 3 Inch, an exit pupil of 13.3mm(at 3x)-4.4mm(at 9x) and a click value of 1/4 MOA. It comes with lens covers, one 3V CR2032 battery and two 1.5V LR44 batteries.