Asymmetrical Preparedness takes a look at the optic from Olight, the Osight. The Osight boasts a pioneering magnetic charging cover that displays battery levels for both the cover and the sight itself (extending battery life to 70+ days).  It features a large window (0.94 x 0.85 inch) with a 3 MOA dot for easy target acquisition even during recoil.  Despite undergoing a rigorous 10,000-round field test, the Osight maintains zero calibration.