Barrel extension

Abstract

A barrel extension used to attach a barrel to a rifle. The barrel extension includes a first end having a resistance fit surface with a cylindrical shape defining a diameter of an inner bore and an internal bolt locking lugs. A second end includes an extended section. An annular flange is disposed between the first and second ends. A threaded length extends a distance between the first and second ends and spans the annular flange to define a threaded connection length. The threaded connection length is about the same length as the diameter of the inner bore.

What is claimed is: 
     
         1 . A barrel extension for attaching a barrel to a rifle, the barrel extension comprising:
 a first end including a resistance fit surface having a cylindrical shape defining a diameter of an inner bore and having an internal bolt locking lugs;   a second end including an extended section; and   an annular flange disposed between the first and second ends, wherein a threaded connection length extends a distance between the first and second ends and spans the annular flange, the threaded connection length being cut into the inner bore, the threaded connection length having a length substantially equal to the diameter of the inner bore.   
     
     
         2 . The barrel extension of  claim 1 , wherein the second end further includes an entrance relief on an outer end positioned before the threaded length. 
     
     
         3 . The barrel extension of  claim 1 , wherein the resistance fit surface further includes a set pin externally mounted and disposed into a receiving hole. 
     
     
         4 . The barrel extension of  claim 3 , wherein the set pin is positioned within a threaded nipple of a receiving hole. 
     
     
         5 . The barrel extension of  claim 1 , wherein the extended section is configured to extend beyond a barrel nut when assembled. 
     
     
         6 . The barrel extension of  claim 1 , wherein the extended section is configured to provide an extra cylindrical length of the barrel extension. 
     
     
         7 . A barrel extension for attaching a barrel to a rifle, the barrel extension comprising:
 an annular flange configured to abut to an upper receiver to attach the barrel to the rifle using a barrel nut;   a first end extending out from a first side of the annular flange, the first end including a resistance fit surface having a cylindrical shape defining a diameter of an inner bore and an internal bolt locking lugs; and   a second end extending out from a second side of the annular flange, the second end including an extended section,   wherein a threaded connection length extends a distance between the first and second ends and spans the annular flange, the threaded connection length being substantially equal to the diameter of the inner bore.   
     
     
         8 . The barrel extension of  claim 7 , wherein the second end further includes an entrance relief positioned opposite the annular flange. 
     
     
         9 . The barrel extension of  claim 7 , wherein the extended section is configured to extend out past the barrel nut when assembled. 
     
     
         10 . The barrel extension of  claim 7 , wherein the extended section is configured to extend the threaded connection length across an extra cylindrical length. 
     
     
         11 . The barrel extension of  claim 7 , wherein the annular flange extend above the first and second ends. 
     
     
         12 . The barrel extension of  claim 7 , wherein the second end is shorter than the first end. 
     
     
         13 . The barrel extension of  claim 7 , wherein the first end is defined with a first diameter and the second end is defined with a second diameter, the annular flange is defined with a flange diameter, the first and second diameters being configured to be less than the flange diameter. 
     
     
         14 . The barrel extension of  claim 13 , wherein the first diameter is substantially equal to the second diameter. 
     
     
         15 . A barrel extension for attaching a barrel to a rifle, the barrel extension comprising:
 a first end including a resistance fit surface having a cylindrical shape and an internal bolt locking lugs;   a second end including an extended section having a cylindrical shape and an entrance relief;   an annular flange disposed between the first and second ends; and   an inner bore having a diameter and extending between the first and second ends and spanning the annular flange, the inner bore including threads that span a threaded connection length over a distance between the first and second ends, the threaded connection length being substantially equal to the diameter of the inner bore.   
     
     
         16 . The barrel extension of  claim 15 , wherein the extended section is configured to provide an extra cylindrical length. 
     
     
         17 . The barrel extension of  claim 16 , wherein the threads in the threaded connection length span substantially across the across the extra cylindrical length. 
     
     
         18 . The barrel extension of  claim 15 , wherein the annular flange extend above an outer diameter of the first and second ends.