Breech device for bolt action firearms

A breech device for bolt-action firearms, the breech device consisting of a breech body (2) reciprocating in the receiver (1) and rotatable into locking position, the breech body (2) having in its front portion locking lugs (3, 4, 5) located in three sectors, the locking lugs (4, 5) in at least two sectors being formed in a breech device equipped with a magazine (6) loaded in parallel so that there are four guide surfaces (7, 8, 9, 10) to limit rotation between the receiver and the breech body, and the breech body (2) has a recessed locking surface (11) for the cartridge at its end, characterised in that the cartridge locking surface has been extended downwardly as a glide surface (12) passing between the locking lugs (4, 5) so that the rear surface of the cartridge case slides on the glide surface. and the locking surface into locking position as the cartridge is ejected from the magazine (6) into the cartridge housing.