The Colt Optics MRS-1 Closed Emitter Miniature Red Dot Sight delivers heavy-duty, all-weather aiming precision in a compact, duty-ready package. It features a fully enclosed housing that shields the advanced internal emitter from mud, rain, snow, and debris, ensuring your aiming point remains clear in the harshest tactical environments. Built on the rugged ACRO footprint, this sight utilizing a crisp, daylight-bright 3 MOA red dot with 12 distinct brightness settings—including 4 dedicated night vision options. Its highly efficient top-loading battery compartment allows for swift CR2032 replacements without removing the optic or losing your zero. Machined from premium aircraft-grade aluminum, the MRS-1 provides unlimited eye relief, parallax-free tracking, and distortion-free micro enclosed windows designed to co-witness perfectly with standard iron sights.