RIFLED FIREARM WITH IDENTIFICATION MARKS Russian patent published in 2007 - IPC F41A21/00 

FIELD: designing and manufacture of custom-made firearm, applicable for identification of the barrel of a rifled firearm manufactured in small lots.

SUBSTANCE: the rifled firearm has a barrel, aiming alleviating device, trigger mechanism, case extractor and marking elements. At least one rifling land on the inner surface of the barrel is used as the marking element, the width of this rifling land differs from the width of the rest rifling lands by 3.2 to 4.9 per cent of the rifling land determined as the difference of the length of the barrel circumference and the overall width of the rifles divided by the number of rifling bands, at least one rifle on the barrel inner surface with a changed shape of the cross-section, whose area is changed by not higher than 5.1 per cent of the original area, the striker of the trigger mechanism made of the preset shape, and at least two lugs made on the case extractor with a preset distance between them.

EFFECT: provided identification of the rifled weapon both by bullet and by empty case.

6 cl, 2 ex