A hand grip control apparatus for a firearm that controls en electronic module that is mounted on the firearm. The electronic module can be a laser sight, a flashlight, or other modules, either connected to directly to the weapon or closely associated with it. For a 9 mm handgun, the laser module chassis mounts on the front face of the muzzle. For a M-16, the chassis mounts on the weapon handle. The weapons factory installed hand grips are replaced by novel hand grips that contain the electronic controls, water proof activation switches, and power source. The hand grips are wired to the chassis via a flexible internal circuit tape in the case of the 9 mm and waterproof quick disconnect cable for the M-16. The apparatus is designed to be used with commercially available batteries providing about 12 hours of operating time.