Firearm and Method of Assembly with Two-Stage Independent Taper-Lock Barrel Nuts

Abstract

A firearm assembly has a barrel and a barrel receiving unit for receiving the barrel. A primary barrel nut is disposed over the barrel and mating with the barrel receiving unit. A primary end of the barrel is mated to a barrel extension. The primary barrel nut has an internal shoulder making contact with a shoulder of the barrel extension. A secondary barrel nut is disposed over the barrel and mating with the primary barrel nut to align the barrel with the barrel receiving unit. The internal shoulder of the primary barrel nut and the shoulder of the barrel extension can be flat or beveled. The secondary barrel nut has an internal shoulder contacting a shoulder of the barrel. The internal shoulder of the secondary barrel nut and the shoulder of the barrel are beveled or tapered.

What is claimed: 
     
         1 . A firearm assembly, comprising:
 a barrel;   a barrel receiving unit adapted for receiving the barrel;   a first barrel nut disposed over the barrel and mating with the barrel receiving unit; and   a second barrel nut disposed over the barrel and mating with the first barrel nut to align the barrel with the barrel receiving unit.   
     
     
         2 . The firearm assembly of  claim 1 , further including:
 a barrel extension, wherein a first end of the barrel is mated to the barrel extension; and   the first barrel nut comprises an internal shoulder making contact with a shoulder of the barrel extension.   
     
     
         3 . The firearm assembly of  claim 2 , wherein the internal shoulder of the first barrel nut and the shoulder of the barrel extension are beveled or tapered. 
     
     
         4 . The firearm assembly of  claim 2 , wherein the internal shoulder of the primary barrel nut and the shoulder of the barrel extension is flat. 
     
     
         5 . The firearm assembly of  claim 1 , wherein the second barrel nut comprises an internal shoulder contacting a shoulder of the barrel. 
     
     
         6 . The firearm assembly of  claim 1 , wherein the internal shoulder of the second barrel nut and the shoulder of the barrel are beveled or tapered. 
     
     
         7 . A firearm assembly, comprising:
 a barrel;   a barrel receiving unit;   a primary barrel nut contacting the barrel and mating with the barrel receiving unit; and   a secondary barrel nut contacting the barrel and mating with the first barrel nut.   
     
     
         8 . The firearm assembly of  claim 7 , further including:
 a barrel extension, wherein a first end of the barrel is mated to the barrel extension; and   the primary barrel nut comprises an internal shoulder making contact with a shoulder of the barrel extension.   
     
     
         9 . The firearm assembly of  claim 8 , wherein the internal shoulder of the primary barrel nut and the shoulder of the barrel extension are beveled or tapered. 
     
     
         10 . The firearm assembly of  claim 8 , wherein the internal shoulder of the primary barrel nut and the shoulder of the barrel extension is flat. 
     
     
         11 . The firearm assembly of  claim 7 , wherein the secondary barrel nut comprises an internal shoulder contacting a shoulder of the barrel. 
     
     
         12 . The firearm assembly of  claim 7 , wherein the internal shoulder of the secondary barrel nut and the shoulder of the barrel are beveled or tapered. 
     
     
         13 . The firearm assembly of  claim 7 , wherein the primary barrel nut is threaded onto the barrel receiving unit and the secondary barrel nut is threaded onto the primary barrel nut. 
     
     
         14 . A method of making a firearm assembly, comprising:
 providing a barrel;   inserting the barrel into a barrel receiving unit;   disposing a first barrel nut over the barrel and mating with the barrel receiving unit; and   disposing a second barrel nut over the barrel and mating with the first barrel nut to align the barrel with the barrel receiving unit.   
     
     
         15 . The method of  claim 14 , further including:
 providing a barrel extension, wherein a first end of the barrel is mated to the barrel extension; and   the first barrel nut comprises an internal shoulder making contact with a shoulder of the barrel extension.   
     
     
         16 . The method of  claim 15 , wherein the internal shoulder of the first barrel nut and the shoulder of the barrel extension are beveled or tapered. 
     
     
         17 . The method of  claim 15 , wherein the internal shoulder of the primary barrel nut and the shoulder of the barrel extension is flat. 
     
     
         18 . The method of  claim 14 , wherein the second barrel nut comprises an internal shoulder contacting a shoulder of the barrel. 
     
     
         19 . The method of  claim 14 , wherein the internal shoulder of the second barrel nut and the shoulder of the barrel are beveled or tapered. 
     
     
         20 . The method of  claim 14 , wherein the first barrel nut is threaded onto the barrel receiving unit and the second barrel nut is threaded onto the primary barrel nut.