Barrel attachment unit for firearm

Abstract

The invention relates to firearms and is a device for mounting the barrel in the receiver. The firearm comprising a receiver with a barrel attachment unit in the form of a clamp, which has on, or more holes in its upper part, a barrel and a base for sighting devices. The barrel is fixed in the barrel attachment unit, and the base for the sighting devices is mounted directly on to the barrel through the holes of the barrel attachment unit. This solution allows to remove the stress from the receiver, arising during the installation of sighting devices, which makes it possible to make the firearm lighter and reduce the production cost. The invention is aimed at improving the performance of the firearm and reducing the production cost.

1 . Firearm comprising a receiver with a barrel attachment unit having the form of a clamp; a barrel with a breech, breech end and a rim; the sight base, characterized in that the barrel attachment unit in its upper part comprising one or more through holes, through which the supporting lugs of the sight base pass, what allows to mount the sight base directly on the barrel. 
     
     
         2 . Firearm according to  claim 1 , characterized in that at least one of the supporting lugs of the sight base has a groove, in which entering a rim of the barrel. 
     
     
         3 . Firearm according to  claim 1 , characterized in that one of the supporting lugs of the sight base has a protrusion that interacts with the end of the breech end of the barrel. 
     
     
         4 . Firearms according to  claim 1 , characterized in that the barrel attachment unit has an elongated part, which serves as the hand guard. 
     
     
         5 . Firearms according to  claim 1 , characterized in that the barrel stopped his breech end at the stop inside the receiver. 
     
     
         6 . Firearm according to  claim 1 , characterized in that the firearm has “bullpup” configuration. 
     
     
         7 . Firearms according to  claim 6 , characterized in that the barrel stopped his breech end to the stop inside the receiver.