Crimson Trace LG-451 Laser-Guard for most 1911 Kimber and S and W 1911 Models, Black Hard Polymer, Rubber overmolded front activation Class IIIA laser; 5mW or less This laser is in conformance with and complies with 21 CFR 1040.10 with a maximum power output of "5mW" for a "Class 3R Red Laser