Tires of shattered optics after shooting plastic all day? That can add up pretty quick! This inexpensive polycarbonate shield is invisible to the shooter, but will safely protect your expensive scope or red dot sight. Uses a high quality plexiglass fitting on the rail mount. Flip down when not in danger, then up in CQB environments. Perfectly clear (picture has removable film on it). Package includes one mount and 2 plexiglass clear shields.