Sighting system with foldable front sight with aperture post

Abstract

The current system is a method for easily adjusting the front sight post on a firearm. The system is used to aid in easier front sight post adjustments as well as maintain a uniform sight picture throughout the aiming process. The system solves the current problem of viewing two separate sight pictures when looking through a rear sight. The system also solves the problem of needing a separate tool to adjust the sight post. The system includes four critical parts, a bottom sight post tower, a top sight post tower, a front sight post and a mechanism for providing constant upward force such as a spring. The system has multiple embodiments including the use of various sight posts.

1 . A firearm sighting system comprising a front sight and a rear sight, the front sight further comprising
 a top tower structured to at least partially enclose a sight post, the sight post having a lower segment with threads, a middle segment with a flange, and an top segment, and   a lower tower having threaded opening for receiving the lower segment of the sight post and an attachment connection structured to attach to a gun bore,   wherein the top tower is structured and operable to be fixed relative to the lower tower in the x plane and y plane and to have freedom of movement in the z plane   wherein the upward vertical movement of the top tower is blocked by the flange near the middle of the sight post   wherein the sight post is coupled to the lower tower via the threads on the lower segment of the sight post mating to the threaded opening on the lower tower.   
     
     
         2 . The firearm sighting system of  claim 1 , wherein the front sight further comprises one or more springs structured and operable to apply an opposing force between the top tower and the lower tower in the z plane. 
     
     
         3 . The firearm sighting system of  claim 1 , wherein the top segment of the sight post comprises two holes both structured and operable for creating a line of sight with a rear sight device. 
     
     
         4 . The firearm sighting system of  claim 1 , wherein the top tower is structured to at least partially enclose the sight post by means of two ears forming an enclosure of 180 degrees or more. 
     
     
         5 . The firearm sighting system of  claim 1 , wherein the bottom tower has an extension configured to fit inside the top tower and is structured and operable to fix the position of the top tower relative to the bottom tower in the x plane and the y plane. 
     
     
         6 . The firearm sighting system of  claim 2 , wherein the one or more springs apply a force of greater than one quarter of a newton. 
     
     
         7 . The firearm sighting system of  claim 1 , wherein the rear sight is structured and configured with a rear sight aperture and arms at least partially enclosing the rear sight aperture, the arms having a centroid. 
     
     
         8 . The firearm sighting system of  claim 7 , wherein the rear sight aperture is structured and configured so that the rear sight aperture is located at the centroid of the arms. 
     
     
         9 . A sighting system comprising a rear sight and a front sight,
 the front sight further comprising
 an upper tower with ears having a centroid, 
 a front sight post structured and configured to provide a shooter with a line of sight to the target and to be sighted with quarter turns, the line of sight being in the centroid of the upper tower and with the front sight post capable of moving independently from the upper tower, and 
   the rear sight further comprising a top tower and rear sight post, the rear sight post structured and configured to raise vertically with the turn of a rear knob, the rear knob configured to receive and store an aperture insert, the rear know further configured to act on a variable cam having a progressive radius.   
     
     
         10 . The sighting system of  claim 9 , wherein the rear sight is further comprised of a lower tower, the top tower configured to move vertically relative to the lower tower and structured with ears that partially encircle a sight hole on a rear sight post, the ears having a centroid, the rear sight post structured and configured to move vertically and independently of the top tower and having a locking means to lock the sight hole in the centroid. 
     
     
         11 . The sighting system of  claim 10 , wherein the sighting system is configured to be sighted to create a line of sight at a plurality of adjustments wherein the front sight post is positioned in the center of the ears of the front sight, and the rear sight post is positioned in the center of the ears of the rear sight so that a line of sight is comprised of four centered reference points. 
     
     
         12 . A method of sighting a firearm, the method comprising,
 displacing an upper tower of a front sight during a first displacement by applying a force from a person using the firearm, the person pressing the upper tower toward a lower tower of a front sight,
 the upper tower comprising a partial enclosure, and a cylindrical hole 
 the lower tower comprising an opening structured for receiving a threaded connection, and an attachment means for attaching to a gun barrel 
   rotating a sight post having an axis a preselected number of rotations corresponding to a preselected elevation of the sight post with respect to the lower tower, the sight post having
 a top segment, the top segment positioned within the partial enclosure of the upper tower and operable for creating a line of sight with a rear sight, 
 a middle segment passing through the cylindrical hole of the upper tower and 
 a lower segment, the lower segment further comprising a threaded connection structured to be coupled to the opening in the lower tower 
   displacing the upper tower of the front sight during a second displacement by releasing the force applied by the person on the upper tower.   
     
     
         13 . The method of sighting a firearm of  claim 12 , wherein the force applied during the first displacement is greater than the force exerted by one or more springs, the one or more springs being structured and operable to exert an opposing force between the upper tower and the lower tower along the axis of the sight post. 
     
     
         14 . The method of sighting a firearm of  claim 12 , wherein the person using the firearm applies the force in the first displacement with one or more fingers. 
     
     
         15 . The method of sighting a firearm of  claim 12 , wherein the top segment of the sight post comprises a ring, the ring operating so that the line of sight with the rear sight extends through the ring. 
     
     
         16 . The method of sighting a firearm of  claim 12 , wherein the middle segment of the sight post comprises a flange, the flange being larger than the cylindrical hole of the upper tower and operable to statically oppose the force between the upper tower and the lower tower. 
     
     
         17 . The method of sighting a firearm of  claim 12 , wherein the upper tower and the lower tower are coupled together by one or more extensions mated to one or more sockets, the extensions and sockets structured and configured to prevent movement of the upper tower in an x plane and a y plane relative to lower tower. 
     
     
         18 . The method of sighting a firearm of  claim 12 , wherein the step of rotating the sight post occurs after the first displacement and before the second displacement. 
     
     
         19 . The method of sighting a firearm of  claim 12 , wherein the force applied by the springs is greater than one quarter of a newton. 
     
     
         20 . The method of sighting a firearm of  claim 12 , wherein the springs are compression springs.