US Patent 10001344 Riser for firearms accessory rails

A riser for spacing a firearms accessory from a firearms accessory rail has a body, at least a portion of the body having approximately the same cross-sectional shape and slot configuration as a mounting portion of the accessory rail, at least one lug depending from the body and extending laterally, the lug being adapted for insertion into a slot of the accessory rail, and a hook adapted for coupling the riser to the accessory rail, the hook extending from a lateral end of the lug. At least a portion of the hook is adapted to be longitudinally aligned with the slot of the accessory rail and adapted to engage the accessory rail by contacting the accessory rail below the associated slot of the accessory rail.