Holosun 507C after a wet, muddy match day

Shot a local match in steady rain and mud with the 507C on a CZ Shadow 2, about 350 rounds. The dot stayed crisp all day; Shake Awake never let me down on the draw. Rain on the window blurred the dot a little when it really came down — wiping the lens fixed it instantly, but it is the one knock against an open emitter. Held zero perfectly start to finish. Dropping a star only for the open-emitter rain behavior; for a fair-weather or range gun it would be five. Still an incredible value.