Gas operating system for low energy ammunition

Abstract

A gas operating system for a firearm for use with low energy ammunition that includes a barrel having a breech, a muzzle, a bore and a gas port, where the gas port is positioned between 1.0 and 2.2 inches away from the breech, a gas block on the barrel and a tube connecting the gas block to a bolt carrier, where the gas block directs energy from combustion gas pressure vented through the gas port to the bolt carrier via the tube.

1 . A gas operating system for a firearm adapted for use with low energy ammunition, wherein the firearm includes a bolt carrier, the system comprising:
 a barrel having a breech, a muzzle, a bore and a first gas port, wherein the first gas port is positioned between 1.0 and 2.2 inches away from the breech;   a gas block disposed on the barrel; and   a tube operatively connecting the gas block to the bolt carrier, wherein the gas block is configured to direct energy from combustion gas pressure vented through the first gas port to the bolt carrier via the tube.   
     
     
         2 . The gas operating system of  claim 1 , wherein the low energy ammunition is selected from the group consisting of: 9 mm, 0.40 and 0.45 ACP. 
     
     
         3 . The gas operating system of  claim 1 , wherein the first gas port is positioned between 1.2 and 2.2 inches away from the breech. 
     
     
         4 . The gas operating system of  claim 3 , wherein the low energy ammunition is selected from the group consisting of: 9 mm, 0.40 and 0.45 ACP. 
     
     
         5 . The gas operating system of  claim 1 , wherein the first gas port is positioned between 1.2 and 1.75 inches away from the breech. 
     
     
         6 . The gas operating system of  claim 5 , wherein the low energy ammunition is selected from the group consisting of: 9 mm, 0.40 and 0.45 ACP. 
     
     
         7 . The gas operating system of  claim 1 , wherein the first gas port is positioned between 1.4 and 1.75 inches away from the breech. 
     
     
         8 . The gas operating system of  claim 7 , wherein the low energy ammunition is selected from the group consisting of: 9 mm, 0.40 and 0.45 ACP. 
     
     
         9 . The gas operating system of  claim 1 , wherein the first gas port is positioned between 1.0 and 1.75 inches away from the breech. 
     
     
         10 . The gas operating system of  claim 9 , wherein the low energy ammunition is selected from the group consisting of: 9 mm, 0.40 and 0.45 ACP. 
     
     
         11 . The gas operating system of  claim 1 , wherein the first gas port is positioned between 1.4 and 2.2 inches away from the breech. 
     
     
         12 . The gas operating system of  claim 11 , wherein the low energy ammunition is selected from the group consisting of: 9 mm, 0.40 and 0.45 ACP. 
     
     
         13 . The gas operating system of  claim 1 , further comprising a piston and connecting rod that directs energy from combustion gas pressure vented through the first gas port to the bolt carrier. 
     
     
         14 . The gas operating system of  claim 1 , further comprising a gas tube directs combustion gas pressure vented through the first gas port to the bolt carrier. 
     
     
         15 . The gas operating system of  claim 1 , further comprising a second gas port, wherein the second gas port is positioned at the same longitudinal position as the first gas port and wherein the second gas port is radially spaced apart from the first gas port. 
     
     
         16 . The gas operating system of  claim 15 , further comprising a third gas port, wherein the third gas port is positioned at the same longitudinal position as the first gas port and wherein the third gas port is radially spaced apart from both the first and second gas ports. 
     
     
         17 . The gas operating system of  claim 16 , wherein the first, second and third gas ports are equally radially spaced around the barrel. 
     
     
         18 . The gas operating system of  claim 1 , wherein the first gas port has a diameter of approximately 0.067 inches. 
     
     
         19 . A firearm comprising:
 the gas operating system of  claim 1 ;   an upper receiver; and   a lower receiver.