Mounting device for a firearm

Abstract

The disclosed subject matter relates to a device for mounting an attachment on the muzzle end of a firearm, which muzzle end has on its outer circumference at least two diametrically opposed recesses, comprising a sleeve which can be pushed onto the muzzle end and which has an opening normal to the axis, a mounting piece which can be connected to the attachment and which has a substantially tubular extension that can be introduced into an annular space between the muzzle end and the sleeve and can be screwed to the sleeve, and a locking element which is radially displaceable in the opening of the sleeve between a closed position, in which its two legs each engage in one of the recesses by way of an inwardly directed rib, and an open position, in which they are released from the recesses, wherein, in the closed position of the locking element, end portions of the legs engage beneath the extension introduced into the annular space.

What is claimed is: 
     
         1 . A device for mounting an attachment on the muzzle end of a firearm having an axis, which muzzle end has an outer circumference with at least two diametrically opposed recesses comprising
 a sleeve which can be pushed onto the muzzle end, thereby forming an annular space, and which has an opening normal to the axis,   a mounting piece which can be or is connected to the attachment and which has a substantially tubular extension that can be introduced into the annular space between the muzzle end and the sleeve and can be screwed to the sleeve, and   a substantially horseshoe-shaped locking element with two legs which locking element is radially displaceable in the opening of the sleeve between a closed position, in which the two legs of the horseshoe each engage in one of the recesses by way of an inwardly directed rib, and an open position, in which the two legs are released from the recesses,   wherein, in the closed position of the locking element, end portions of the legs engage beneath an end of the extension when the extension is introduced into the annular space.   
     
     
         2 . The device according to  claim 1 , wherein the end of the extension is conically tapered and a side of the locking element facing towards the end is of complementary shape. 
     
     
         3 . The device according to  claim 1 , wherein the end of the extension is graduated in a step-like manner and a side of the locking element facing towards the end is of complementary shape. 
     
     
         4 . The device according to  claim 1 , wherein each leg of the locking element is shaped to form an inwardly projecting web on thea side of the rib facing away from the extension, said web serving to bear against a lateral flattened portion of the muzzle end. 
     
     
         5 . The device according to  claim 1 , wherein the sleeve has, at an end facing away from the mounting piece, at least one inner protrusion for supporting the sleeve against the outer circumference of the muzzle end. 
     
     
         6 . The device according to  claim 5 , wherein the inner protrusion is equipped with at least one resilient pressure piece. 
     
     
         7 . The device according to  claim 1 , wherein the extension has at least one inner protrusion for supporting the extension against the outer circumference of the muzzle end. 
     
     
         8 . The device according to  claim 1 , wherein the mounting piece in the mounted position forms an axial stop for the muzzle end. 
     
     
         9 . The device according to  claim 1 , wherein the locking element has at least one grip, which in the closed position of the locking element projects beyond the outer circumference of the sleeve. 
     
     
         10 . The device according to  claim 1 , wherein the locking element in the open position butts with a shoulder against a stop of the sleeve. 
     
     
         11 . The device according to  claim 10 , wherein the sleeve has, at an end facing away from the mounting piece, at least one inner protrusion for supporting the sleeve against the outer circumference of the muzzle end, and wherein the shoulder is formed by the end wall of a groove in a side of the locking element facing away from the mounting piece, and the stop is formed by the end of a screw that penetrates the inner protrusion of the sleeve in a manner parallel to the axis. 
     
     
         12 . The device according to  claim 10 , wherein the sleeve has, at an end facing away from the mounting piece, at least one inner protrusion for supporting the sleeve against the outer circumference of the muzzle end, and wherein each of the two legs of the locking element is equipped with a respective guide groove, and the inner protrusion of the sleeve is equipped with a respective pin which is guided in the guide groove. 
     
     
         13 . The device according to  claim 1 , wherein one of the two parts locking element and sleeve has at least one detent and the respective other part has a spring element that interacts therewith, by means of which detent and spring element the locking element can be temporarily latched in the open position relative to the sleeve. 
     
     
         14 . The device according to  claim 1 , wherein the extension has, in an axial portion, an inner circumferential depression which, in the mounted position, forms a cavity relative to the muzzle end. 
     
     
         15 . The device according to  claim 1 , wherein the sleeve has at least one pressure relief opening distributed about a circumference of the sleeve.