Firearm actuation system

Abstract

An actuation system includes a bolt carrier assembly configured for use within a firearm, the bolt carrier assembly including a firing pin configured for striking a chambered round. A hammer assembly is configured for striking the firing pin of the bolt carrier assembly. An auto sear assembly is configured to actuate the hammer assembly during operation of the firearm. A linkage assembly is configured to couple the bolt carrier assembly and the auto sear assembly and effectuate the auto sear assembly actuating the hammer assembly.

What is claimed is: 
     
         1 . An actuation system comprising:
 a bolt carrier assembly configured for use within a firearm, the bolt carrier assembly including a firing pin configured for striking a chambered round;   a hammer assembly configured for striking the firing pin of the bolt carrier assembly;   an auto sear assembly configured to actuate the hammer assembly during operation of the firearm; and   a linkage assembly configured to couple the bolt carrier assembly and the auto sear assembly and effectuate the auto sear assembly actuating the hammer assembly.   
     
     
         2 . The actuation system of  claim 1  wherein the auto sear assembly is further configured to cyclically hold the hammer assembly in a cocked position and cyclically release the hammer from the cocked position during operation of the firearm. 
     
     
         3 . The actuation system of  claim 2  wherein the hammer assembly is configured to releasably engage the auto sear and effectuate the cyclical holding of the hammer assembly in the cocked position and the cyclical releasing of the hammer from the cocked position during operation of the firearm. 
     
     
         4 . The actuation system of  claim 1  wherein the bolt carrier assembly is configured to be cyclically longitudinally displaced during operation of the firearm. 
     
     
         5 . The actuation system of  claim 4  wherein the linkage assembly is configured to be cyclically longitudinally displaced in response to the cyclical longitudinal displacement of the bolt carrier assembly. 
     
     
         6 . The actuation system of  claim 1  wherein the linkage assembly is configured to be cyclically longitudinally displaced within an upper receiver assembly of the firearm. 
     
     
         7 . The actuation system of  claim 6  wherein the upper receiver assembly is configured to releasably engage a lower receiver assembly. 
     
     
         8 . The actuation system of  claim 7  wherein the lower receiver assembly is an AR platform lower receiver assembly. 
     
     
         9 . An actuation system comprising:
 a bolt carrier assembly configured for use within a firearm, the bolt carrier assembly including a firing pin configured for striking a chambered round and configured to be cyclically longitudinally displaced during operation of the firearm;   a hammer assembly configured for striking the firing pin of the bolt carrier assembly;   an auto sear assembly configured to actuate the hammer assembly during operation of the firearm and cyclically hold the hammer assembly in a cocked position and cyclically release the hammer from the cocked position during operation of the firearm; and   a linkage assembly configured to couple the bolt carrier assembly and the auto sear assembly and effectuate the auto sear assembly actuating the hammer assembly.   
     
     
         10 . The actuation system of  claim 9  wherein the hammer assembly is configured to releasably engage the auto sear and effectuate the cyclical holding of the hammer assembly in the cocked position and the cyclical releasing of the hammer from the cocked position during operation of the firearm. 
     
     
         11 . The actuation system of  claim 10  wherein the linkage assembly is configured to be cyclically longitudinally displaced in response to the cyclical longitudinal displacement of the bolt carrier assembly. 
     
     
         12 . The actuation system of  claim 9  wherein the linkage assembly is configured to be cyclically longitudinally displaced within an upper receiver assembly of the firearm. 
     
     
         13 . The actuation system of  claim 12  wherein the upper receiver assembly is configured to releasably engage a lower receiver assembly. 
     
     
         14 . The actuation system of  claim 13  wherein the lower receiver assembly is an AR platform lower receiver assembly. 
     
     
         15 . An actuation system comprising:
 a bolt carrier assembly configured for use within a firearm, the bolt carrier assembly including a firing pin configured for striking a chambered round; and   a linkage assembly configured to couple the bolt carrier assembly to an auto sear assembly.   
     
     
         16 . The actuation system of  claim 15  wherein the bolt carrier assembly is configured to be cyclically longitudinally displaced during operation of the firearm. 
     
     
         17 . The actuation system of  claim 16  wherein the linkage assembly is configured to be cyclically longitudinally displaced in response to the cyclical longitudinal displacement of the bolt carrier assembly. 
     
     
         18 . The actuation system of  claim 15  wherein the linkage assembly is configured to be cyclically longitudinally displaced within an upper receiver assembly of the firearm. 
     
     
         19 . The actuation system of  claim 18  wherein the upper receiver assembly is configured to releasably engage a lower receiver assembly. 
     
     
         20 . The actuation system of  claim 19  wherein the lower receiver assembly is an AR platform lower receiver assembly. 
     
     
         21 . The actuation system of  claim 19  wherein the lower receiver assembly includes:
 a hammer assembly configured for striking the firing pin of the bolt carrier assembly; and 
 the auto sear assembly, wherein the auto sear assembly is configured to actuate the hammer assembly during operation of the firearm; 
 wherein the linkage assembly is configured to effectuate the auto sear assembly actuating the hammer assembly. 
 
     
     
         22 . The actuation system of  claim 21  wherein the auto sear assembly is further configured to cyclically hold the hammer assembly in a cocked position and cyclically release the hammer from the cocked position during operation of the firearm. 
     
     
         23 . The actuation system of  claim 22  wherein the hammer assembly is configured to releasably engage the auto sear and effectuate the cyclical holding of the hammer assembly in the cocked position and the cyclical releasing of the hammer from the cocked position during operation of the firearm.