Standard issue but not standard construction is the best way to describe the Aimpoint CompM4S Red Dot Sight. Originally designed for military use, it mounts quickly and will light up and stay working for up to 8 years on a single AA battery. The 2 MOA red dot gives you both-eyes open targeting speed and enhanced situational awareness while the hard anodized aluminum alloy housing withstands drops, even into water depths reaching 150 feet. The QRP2 mount has twice the clamping power of previous models with a wider, shorter twist knob to lower the risk of snagging. The front lens is recessed for improved protection from impact and threaded to accept an anti-reflection device. Multi-layer, anti-reflex coating reduces reflection and recessed front guards against impact damage, scratches and smudges A threaded front opening allows attachment of an anti-reflection device High strength aluminum housing with low-positioned battery compartment is built to withstand the challenging conditions of modern law enforcement Compatible with every generation of night vision device (NVD) as well as the Aimpoint Mag-1 magnifier ACET technology makes it possible to get 80,000 hours of constant operation from a single AA battery Parallax-free 2 MOA red dot and unlimited eye relief keeps you naturally fixed on target Order today!