Firearm with removable barrel

Abstract

The invention relates to small firearms and constitutes a device for attaching a barrel to the receiver. A clamping attachment of the barrel to the receiver allows for various sighting devices to be installed directly on the breech section of the barrel, thus allowing the barrel to be detached from the firearm without losing the alignment of the sight against the barrel.

1 . The firearm comprising a detachable barrel with a sight base mounted on a barrel intended for installation of sights, scopes, brackets, receiver, characterized in that the receiver comprising a barrel attachment unit having the form of a clamp with a longitudinal groove in the upper part, where the clamp itself is symmetrical concerning the vertical plane passing through the longitudinal axis of the firearm, while the longitudinal groove is oriented up wards, the barrel is mounted in the barrel attachment unit and fixed by the clamping bolts in such a way that the sight base enters in a longitudinal groove of barrel attachment unit and the clamping bolts are screwed in to the sight base or directly in to the barrel walls. 
     
     
         2 . The firearm according to item  1  characterized in that the clamping bolts pass through the holes in the sight base and are tightened by means of nuts or other parts comprising thread. 
     
     
         3 . The firearm, according to item  1 , characterized in that the barrel attachment unit comprising thread and the barrel with a sight base is fixed in the barrel attachment unit by means of a union nut.