Firearm barrel with outer sleeve

Abstract

A firearm barrel assembly having a barrel tube and an outer sleeve. A sleeve nut is threaded on the barrel tube to retain the outer sleeve on the sleeve nut and to tension the barrel tube.

1 . A firearm barrel assembly comprising:
 an inner firearm barrel made of a first material, said inner firearm barrel having an entrance end and an exit end, said exit end of said inner firearm barrel comprising a threaded segment, said inner firearm barrel comprising a first inner firearm barrel outer diameter proximal to said entrance end and a second inner firearm barrel outer diameter between said entrance end and said exit end;   an outer sleeve secured about said inner firearm barrel, said outer sleeve made of a second material, said outer sleeve comprising an outer sleeve inner diameter and an outer sleeve outer diameter;   said outer sleeve inner diameter greater than said second inner firearm barrel outer diameter; an air gap between said outer sleeve and said inner firearm barrel along at least a portion of said inner firearm barrel between said entrance end of said inner firearm barrel and said exit end of said inner firearm barrel;   a sleeve nut rotatably engaged with said threaded segment of said inner firearm barrel, said sleeve nut comprising a sleeve nut inner diameter equal to said second inner firearm barrel outer diameter, said sleeve nut further comprising a first sleeve nut outer diameter and a second sleeve nut outer diameter, said first sleeve nut outer diameter equal to said outer sleeve inner diameter, said second sleeve nut outer diameter equal to said outer sleeve outer diameter;   said sleeve nut rotatable along said threaded segment toward said entrance end of said inner firearm barrel thereby tensioning said inner firearm barrel; and   an exposed segment of said inner firearm barrel threaded segment between said sleeve nut and said exit end of said inner firearm barrel.   
     
     
         2 . The firearm barrel assembly of  claim 1 , wherein said first material comprises a metal. 
     
     
         3 . The firearm barrel assembly of  claim 2 , wherein said first material is steel. 
     
     
         4 . The firearm barrel assembly of  claim 1 , wherein said second material comprises a carbon fiber material. 
     
     
         5 . The firearm assembly of  claim 1 , wherein said second material comprises aluminum or titanium. 
     
     
         6 . The firearm barrel assembly of  claim 1 , said outer sleeve further comprising a plurality of openings. 
     
     
         7 . The firearm barrel assembly of  claim 1 , said inner firearm barrel comprising a step between a first segment of said inner firearm barrel comprising said first inner firearm barrel outer diameter and a second segment of said inner firearm barrel comprising said second inner firearm barrel outer diameter, said step coupled to said outer sleeve. 
     
     
         8 . The firearm barrel assembly of  claim 1 , said sleeve nut further comprising a sleeve nut step between said first sleeve nut outer diameter and said second sleeve nut outer diameter, said sleeve nut step coupled to said outer sleeve. 
     
     
         9 . The firearm barrel assembly of  claim 1 , said inner firearm barrel further comprising a sleeve support segment comprising a third inner firearm barrel outer diameter, said third inner firearm barrel outer diameter less than said first inner firearm barrel outer diameter and greater than said second inner firearm barrel outer diameter. 
     
     
         10 . The firearm barrel assembly of  claim 9 , said third inner firearm barrel outer diameter equal to said outer sleeve inner diameter.