US Patent 10578395 Grip activation system for firearm accessory

Firearm accessories and methods are provided in which a grip force is received at a grip force receiving surface that is positioned at least one half of a trigger guard away from an actuation sensor in the accessory, at least a portion of a grip force is used to create a change in a physical condition proximate to the actuation sensor that the actuation sensor is adapted to sense; and the sensed change in physical condition is used to determine a control output for an electronic system in the firearm accessory.