Midas Beam (TSR 1 Open Sight)

The Athlon Optics Midas Beam (TSR 1 Open Sight) is a compact, open reflex red dot sight designed for versatility across various firearms, including pistols (with the correct footprint), modern sporting rifles, and shotguns. It's particularly notable for its large objective lens window (often cited as 32x44mm), providing a wide field of view for rapid target acquisition. Key features include a crisp 3 MOA (or sometimes 6 MOA) red dot, impressive 50,000-hour battery life, and motion-activated illumination, which automatically wakes the sight from sleep mode when movement is detected. Built from aircraft-grade aluminum, it's designed to be shockproof, fog-proof, and waterproof. Users generally praise its clear optics, durability, and excellent value for its price point, often comparing it favorably to more expensive brands. While it typically comes with a Picatinny mount, it's also compatible with the Doctor/Noblex footprint for direct mounting on certain pistol slides, and Athlon also offers a specific TSR1-M model for Glock MOS systems.