| 主权项 |
1. A mounting apparatus for securing a sight device to a rail aligned with a sighting axis of a firearm, the mounting apparatus comprising:
a base having upper and lower extents, the upper extent of the base having a recess with generally opposing walls; a longitudinal groove in each of the generally opposing walls; a sight base configured to receive and secure the sighting device, a portion of the sight base received between the opposing walls of and coupled to the base by a pair of pins, each pin running longitudinally in one of the grooves, the sight base rotatable about the pins between an aligned position with the sight base extending between the opposing walls and the sight device aligned with the sighting axis, and an offset position rotated away from the aligned position; a detent mechanism extending between each of the walls and the sight base to releasably retain the sight base in the aligned position; a clamp member carried on the lower extent of the base, the clamp configured to releasably engage the rail and having a portion selectively movable to tighten and secure the clamp and base to the rail; a lever pivotally coupled to the base and to the clamp member, the lever having a camming surface configured to move the movable portion of the clamp into and out of engagement with the rail in response to actuation of the lever; and a resilient biasing member carried by the base adjacent to the lever, wherein the camming surface of the lever bears on the resilient member. |
