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.

Claims

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.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The essence of the invention is illustrated by the sketches, where:

[0009] On FIG. 1the appearance of the firearm with a detachable barrel;

[0010] On FIG. 2the appearance of the receiver with barrel attachment unit and the cross section along C-C, the partial view A;

[0011] On FIG. 3the diagram of the barrels interchange;

[0012] On FIG. 4the appearance of the firearm, and the cross section along A-A, D-D, the partial view B;

[0013] On FIG. 5the appearance of the firearm, cross section along A-A, C-C the partial view B, in variant then barrel fixed by the clamping bolts screwed directly into the barrel walls;

[0014] On FIG. 6the appearance of the receiver, cross section along B-B, the partial view A, in variant then barrel fixed by the clamping bolts screwed directly into the barrel walls;

[0015] On FIG. 7the diagram of the barrels interchange, when barrel fixed by the clamping bolts screwed directly into the barrel walls;

[0016] On FIG. 8the appearance of the firearm, cross section along A-A, C-C the partial view B, in variant then barrel fixed by the clamping bolts passing through holes in the sight base and tightened by nuts or other parts comprising thread;

[0017] On FIG. 9the appearance of the firearm with barrel attachment by means of union nut, the partial view B, the cross-sections along A-A, C-C;

[0018] On FIG. 10the appearance of the receiver with barrel attachment unit, when barrel fixed by means of union nut, cross-section along D-D, the partial view C;

[0019] On FIG. 11the diagram of the barrel interchange in variant, when barrel fixed by means of union nut.

BEST MODE FOR CARRYING OUT THE INVENTION

[0020] The firearm with a detachable barrel (FIG. 1) includes a barrel 1, a sight base 2 rigidly fixed on the barrel, and a receiver 3.

[0021] The barrel 1 is installed in the barrel attachment unit 4 (FIG. 3) of the receiver 3 and fixed in place by the clamping bolts 5. As the bolts 5 are tightened in the sight base 2, the barrel 1 is fixed in the barrel attachment unit 4 of the receiver 3 (FIG. 3, FIG. 4).

[0022] In an optional variant, the barrel 1 (FIG. 5) is fixed in the barrel attachment unit 4 of the receiver 3 by the bolts 6 screwed directly into the barrel walls.

[0023] In an optional variant, the barrel 1 (FIG. 8) is fixed in barrel attachment unit by the clamping bolts 7 pass through holes in the sight base and tightened with the nuts 8 or other parts comprising thread.

[0024] In an optional variant, the barrel 1 (FIG. 9, FIG. 10) is fixed by the union nut 9 screwed on to the protruding barrel attachment unit 4.2 of the receiver 3.2.