L14G1 Hermetic Silicon Photo Transistor Gun Optic Sensor that is used on many optic pcb in lots of different arcade gun games. TO-18 Package. Same optic sensor as standard Suzo-Happ guns use L14G1. Used in guns for Time Crisis I, II, III, and Point Blank and alot of the BBH, big buck hunter guns and many others. The L14G1 might substitute for OP805SL.