Patent ID: 7946074
Filing Date: 2011-05-24
Classification: F41G

Abstract:
1. A sighting system for a machine gun, comprising: a front sight assembly configured for lateral movement perpendicular to a longitudinal plane of the machine gun and including a first aperture member configured to be raised and lowered relative to the longitudinal plane of the machine gun, and including at least one detent spring loaded plunger assembly operatively connected to the first aperture member for registering and retaining the first aperture member in a fixed position relative to a line-of-sight while the machine gun is being operated; and a rear sight assembly comprising a second aperture member, a base support cradle for supporting the second aperture member and at least one detent plunger spring assembly operatively connected to the second aperture member for registering and retaining the second aperture member in a fixed position within the base support cradle and relative to a line-of-sight while the machine gun is being operated; wherein the second aperture member of the rear sight assembly has a longitudinal opening and wherein the detent plunger spring assembly of the rear sight assembly operatively connected to the second aperture member extends through the longitudinal opening of the second aperture member and is comprised of at least two plunger members, a guide rod and a spring mounted on each end of the guide rod, and wherein the guide rod extends between and into its two opposed ends with the spring extending into one of the two plunger members, and wherein the rear sight assembly is configured for lateral windage movement within the base support cradle and further includes a windage screw assembly fixedly secured in the base support cradle and having an elongated shaft with a threaded portion extending longitudinally through the second aperture member and a knob for rotating the elongated shaft and its threaded portion for the lateral movement of the aperture second member along the threaded portion of the elongated shaft of the windage screw assembly and within the base support cradle.