Truglos Tru-Tec dot sight features a 2-MOA dot for precise aiming and a 25mm multi-coated objective lens for bright, clear viewing. Features 10 brightness settings with memory recall and auto wake/sleep modes to preserve battery life. This sight is CNC-machined from aircraft-grade aluminum and includes low and high Picatinny rail mounts. The Tru-Tec is waterproof, fog-proof, and nitrogen filled.