Machine gun

Abstract

The present invention relates to a firearm fired from an open bolt comprising a firing control mechanism 3 arranged below a frame inside which moving parts 2 , moved backward by gas recovery and forward by a return spring 12 , slide, the gas recovery and the return spring 12 being arranged below the axis of the barrel 5 , said firearm comprising a hammer 14 arranged, in the loaded position, above the axis of the barrel 5 , and the release of said hammer 14 being independent of the firing control mechanism 3.

1 . An open-bolt firearm comprising a fire-control mechanism arranged under a frame in which there slide moving parts which are moved rearward by a gas recovery piston and forward by a recoil spring, the gas recovery piston and the recoil spring being positioned under an axis of the barrel, said firearm comprising a hammer positioned, in a loaded position, above the axis of the barrel, and release of said hammer being independent of the fire-control mechanism. 
     
     
         2 . The firearm as claimed in  claim 1 , wherein the moving parts comprise a cam actuating the release of the hammer during locking of a bolt. 
     
     
         3 . The firearm as claimed in  claim 2 , comprising a sear configured to control the release of the hammer when the cam moves said sear. 
     
     
         4 . The firearm as claimed in  claim 1 , wherein the hammer comprises a concave sliding surface directed toward the moving parts. 
     
     
         5 . The firearm as claimed in  claim 4 , further comprising a slide having at its lower rear end an upper cam configured to bear on the lower end of the concave sliding surface during a first section of a recoil of the slide. 
     
     
         6 . The firearm as claimed in  claim 5 , wherein the slide comprises at its upper rear end a lower cam configured to bear on the concave sliding surface during a second section of the recoil of the slide.