Adjustable and interchangeable sight assembly

Abstract

The techniques described herein relate to methods and apparatuses for adjustment of an interchangeable sight assembly. Elevation and windage of a sight insert may be adjusted. Further, the elevation adjustment mechanism may be used to uncouple a sight insert from the sight assembly and couple another sight insert.

What is claimed is: 
     
         1 . An adjustable sight assembly for a firearm, the sight assembly comprising:
 a base configured to attach to a firearm;   a sight insert configured to couple to the base, wherein the sight insert includes a notch in a surface of the sight insert; and   a screw comprising a screw head and a threaded shaft, wherein:
 the screw head is configured to engage with the notch of the sight insert to couple the sight insert to the base; and 
 rotation of the screw is configured to control elevation of the sight insert via the threaded shaft. 
   
     
     
         2 . The sight assembly according to  claim 1 , wherein the sight insert is a fiber optic sight insert, a U-notch sight insert, a trapezoidal sight insert, a v-notch sight insert, a square-notch sight insert, or a circular sight insert. 
     
     
         3 . The sight assembly according to  claim 1 , further comprising:
 an interface, wherein:
 the interface couples to the base; and 
 the sight insert is configured to couple to the base by coupling to the interface. 
   
     
     
         4 . The sight assembly according to  claim 3 , wherein:
 the sight insert includes a sight track on each of two opposing sides of the sight insert; and   the sight tracks of the sight insert are configured to be engaged in respective sight track guides of the interface to couple the sight insert to the interface.   
     
     
         5 . The sight assembly according to  claim 4 , wherein the sight tracks slide along the sight track guides based on the rotation of the screw. 
     
     
         6 . The sight assembly according to  claim 4 , wherein the interface is coupled to the base via insertion of a protruding portion of the interface into an opening in the base. 
     
     
         7 . The sight assembly according to  claim 6 , further comprising a windage adjustment screw configured to couple the base to the portion of the interface, wherein
 the windage adjustment screw is prevented from moving laterally such that rotation of the windage adjustment screw causes lateral movement of the portion of the interface along the windage adjustment screw.   
     
     
         8 . The sight assembly according to  claim 3 , further comprising an elevation set screw configured to set the interface to the sight insert at a desired position to maintain the elevation of the sight insert. 
     
     
         9 . The sight assembly according to  claim 3 , further comprising a windage set screw configured to set the interface to the base at a desired position to maintain a windage setting of the sight insert. 
     
     
         10 . The sight assembly according to  claim 1 , further comprising a second sight insert configured to couple to the base following decoupling of the sight insert from the base, wherein
 the second sight insert includes a second notch in a surface of the second sight insert for engagement with the screw head such that rotation of the screw is configured to control elevation of the second sight insert.