Abstract: A rail clamp assembly that improves the mechanisms whereby a rail is secured to the rail clamp assembly comprising a mounting base having a diagonally and generally elliptical-shaped channel formed therethrough and further comprising a clamp member. The clamp member has a diagonally formed throughway formed therethrough. The clamp member is received by the mounting base such that the throughway of the clamp member is aligned with the channel. The clamp member further comprises a protrusion which is received within a slot of the rail and the mounting base comprises a protrusion which is received within an adjacently situated slot of the rail. A side wall of the mounting base and an inclined surface of a flange of the clamp member are configured to engage with an inclined surface of the rail to further secure the rail to the assembly.

Abstract: A crosslock assembly comprising a base having a chamber formed therethrough, wherein the chamber is surrounded by a distal wall. The distal wall comprises an interior wall oppositely formed with an exterior wall, wherein an opening is formed between the interior and exterior walls. The assembly further comprises a crosslock having a shaft upon which a support member is disposed, and a housing having a channel formed therethrough. When assembled, the housing is disposed within the chamber of the base, and the shaft of the crosslock is disposed through the opening of the exterior and interior walls of the distal wall of the base such that the support member is disposed within the channel of the housing.

Abstract: An elevation adjustment sight assembly, comprising a windage carrier, a lift dial, and a lift spring. The windage carrier is specially structured to fit within a housing. The lift dial and the lift spring are specially structured to fit within the windage carrier and are movable in relation to the windage carrier to thereby adjust the height of a sight held by the housing.

Abstract: A folding sight assembly, comprising a housing having a lower region that is configured to hold a crosslock, and an upper region comprising a catch plate separated from a windage adjustment plate by a space. The assembly comprises a shaft and an engagement spring. The engagement spring comprises a longitudinally extending body that turns to form a retaining loop portion comprising an arcuate-shaped member having an opening formed therethrough. The shaft is disposed through the opening of the engagement spring and within the space formed between the windage adjustment and catch plates, and the engagement spring is further engaged with the housing and the crosslock to secure the component parts of the folding sight assembly to one another.