US Patent 9377274 Coupling firearm accessories to a firearm

A system for coupling various types of firearm accessories to a firearm having an accessory rail may include a coupling member. The coupling member may include a head and a threaded body. The head may have a diameter that fits through a first region of an accessory rail of a firearm but not through a second region. A method of coupling a firearm accessory to a firearm may include inserting the head of the coupling member through the first region of the accessory rail and moving the threaded body into the second region of the accessory rail. The method may further include driving the threaded body into the threaded hole such that the coupling member and firearm accessory are compressed against the accessory rail.