Firearm scope mount

Abstract

Disclosed is a scope mount for a firearm that can be used for firing different types of ammunition without having to re-zero the scope when switching from one type of ammunition to another. The scope mount can include a base and a chassis pivotally mounted to the base. The chassis adjusts both elevation and windage alignments of the scope with respect to the base. Also disclosed is a method of operating a scope assembly mounted to a firearm, including the steps of setting a handle of the scope mount to a rested position corresponding to a first type of ammunition, zeroing the scope when the handle is in the rested position; moving the handle to an engaged position corresponding to a second type of ammunition different from the first type of ammunition; and zeroing the scope when the handle is in the engaged position.

What is claimed is: 
     
         1 . A firearm scope mount comprising:
 a base;   a chassis pivotally mounted to the base and adapted to releasably attach a scope to the firearm scope mount; and   a handle pivotally engaged with the chassis, the handle being rotatable in a first direction from a rested position to an engaged position, and being rotatable in a second direction from the engaged position to the rested position;   wherein the chassis is pivotable with respect to the base in both an elevation direction and a windage direction when the handle is in the engaged position for adjusting an alignment of the scope in at least one of the elevation and windage directions.   
     
     
         2 . The firearm scope mount of  claim 1 , wherein the chassis returns to a neutral elevation position and a neutral windage position when the handle is rotated in the second direction from the engaged position to the rested position. 
     
     
         3 . The firearm scope mount of  claim 2 , wherein the chassis pivots in at least one of the elevation and windage directions when the handle is rotated in the first direction from the rested position to the engaged position. 
     
     
         4 . The firearm scope mount of  claim 1 , further comprising:
 a windage block receiving a mount elevation screw and a mount windage screw; and   an elevation cam fixedly attached to the handle and adapted to engage an elevation post;   wherein a rotation of the mount elevation screw is configured to pivot the chassis about an elevation pivot pin mounted to the base; and   wherein a rotation of the mount windage screw is configured to pivot the chassis about a windage pivot pin indirectly mounted to the base.   
     
     
         5 . The firearm scope mount of  claim 1 , further comprising a biasing mechanism held by the chassis, wherein the biasing mechanism is configured to return the chassis to a neutral windage position when the handle is rotated from the engaged position to the rested position. 
     
     
         6 . The firearm scope mount of  claim 1 , further comprising a compression spring housed inside the base, wherein the compression spring is configured to return the chassis to a neutral elevation position when the handle is rotated from the engaged position to the rested position. 
     
     
         7 . The firearm scope mount of  claim 1 , wherein the chassis comprises a receiving tray and an interface plate releasably attached to the receiving tray. 
     
     
         8 . The firearm scope mount of  claim 1 , further comprising a clamp for releasably attaching the firearm scope mount to a firearm. 
     
     
         9 . A firearm comprising the firearm scope mount of  claim 1 . 
     
     
         10 . The firearm of  claim 9 , further comprising 300 BLK ammunition. 
     
     
         11 . A scope assembly comprising the firearm scope mount of  claim 1  and a scope. 
     
     
         12 . A method of operating a scope assembly mounted to a firearm, the scope assembly comprising a scope attached to a scope mount, the scope mount having a handle rotatable between a rested position and an engaged position, the method comprising:
 (a) setting the handle of the scope mount to a rested position corresponding to a first type of ammunition;   (b) zeroing the scope when the handle is in the rested position;   (c) moving the handle from the rested position to an engaged position corresponding to a second type of ammunition different from the first type of ammunition; and   (d) zeroing the scope when the handle is in the engaged position.   
     
     
         13 . The method of  claim 12 , wherein the first type of ammunition is supersonic ammunition and the second type of ammunition is subsonic ammunition. 
     
     
         14 . The method of  claim 12 , wherein step (b) comprises adjusting the alignment of the scope in at least one of an elevation direction and a windage direction by turning a corresponding scope elevation adjustment screw and/or a scope windage adjustment screw. 
     
     
         15 . The method of  claim 12 , wherein step (c) comprises rotating the handle about 120° to about 180° from the rested position to the engaged position. 
     
     
         16 . The method of  claim 12 , wherein step (d) comprises adjusting the alignment of the scope in at least one of an elevation direction and a windage direction by turning a corresponding mount elevation adjustment screw and/or mount windage adjustment screw.