Novel Improvements for KRISS-type Firearm and Magazines for these Firearms

Abstract

The invention relates to improvements in the design and operating mechanisms in a KRISS-type firearm, or a firearm employing a mobile mass. In one aspect, the invention is an improved cocking lever assembly comprising a main pin provided with a tenon ( 9 ) at one end (E), with a supporting compression spring ( 5 ), a cocking button ( 3 ), and a retention means ( 4 ), attached to a mobile mass ( 1 ). This assembly allows direct activation of the mobile mass ( 1 ) by the action of the operator's force on the cocking lever. Advantageously, this cocking lever assembly can be mounted indiscriminately on the right or the left of the mobile mass ( 1 ) and therefore of the firearm, according to the user's preference. This cocking lever assembly combines certain safety criteria with the option of ambidextrous use often preferred in modern firearms.

1 . An assembly for cocking a firearm for use in a firearm that employs a mobile mass moving in conjunction with the movement of the bolt of a firearm during its firing cycle, the assembly comprising a removeable cocking lever, wherein the cocking lever comprises on one end a handle and the other end a main pin, and wherein the main pin has at least one tenon or projection that locks into a receiving slot or area of the mobile mass, and the mobile mass comprises an interior hole or tunnel through which the main pin can be inserted from either side of the firearm allowing ambidextrous use, whereby the cocking lever in the locked position can move the mobile mass by the action of the operator's force on the handle. 
     
     
         2 . The assembly of  claim 1 , wherein the cocking lever further comprises an elastic element or spring in the handle end that applies force against the handle when the main pin is inserted into the mobile mass. 
     
     
         3 . The assembly of one of  claim 1  or  2 , wherein the handle of the cocking lever further comprises a manual engaging switch capable of turning the projection or tenon on the end of the main pin. 
     
     
         4 . The assembly of  claim 3 , wherein the manual engaging switch is a screw, a rivet, or comprises a flared flange. 
     
     
         5 . The assembly of  claim 1 , wherein the mobile mass has at least one slot in addition to the receiving slot on each side of the mobile mass. 
     
     
         6 . A firearm comprising the assembly of one of  claims 1  to  5 , wherein the frame of the firearm comprises a groove for the movement of the cocking lever down the frame away from the barrel and a receiving notch or area that is capable of holding the cocking lever in a loaded position when the operator moves the locking lever along the groove from an unloaded position to a loaded position. 
     
     
         7 . A firearm frame comprising a magazine well and an assembly for locking and releasing the magazine that can be operated from either side of the frame, the assembly comprising left and right side control buttons operably connected to a push rod within the magazine well, the push rod activating the movement of at least one catch projection in the well to release a magazine when locked in the magazine well, the at least one catch projection positioned to hold the magazine through one or more retention means on the surface of the magazine. 
     
     
         8 . The firearm frame of  claim 7 , wherein upper and lower catch projections hold the magazine simultaneously. 
     
     
         9 . The firearm frame of one of  claim 7  or  8 , wherein a spring is positioned to return the control button to its resting position after the operator depresses the left or right side control button to release the magazine. 
     
     
         10 . The firearm frame of one of  claim 8  or  9 , wherein the magazine well is capable of receiving an extended magazine and the lower catch projection comprises a spring-loaded clasp or hook that locks the extended magazine. 
     
     
         11 . The firearm frame of one of  claims 8 - 10 , wherein the upper catch projection fits into a slot in the magazine to lock the magazine. 
     
     
         12 . The firearm frame of  claim 7 , wherein the control button comprises a pair of sloped planes that contact an upper catch projection that lock the magazine into the magazine well. 
     
     
         13 . An extended magazine for use in the firearm frame as claimed in  claim 10 , wherein the magazine comprises a receiving area that interacts with the claps or hook to lock the magazine securely in place.