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.

Abstract: A silencer system for a firearm comprises a jacket tube which is mountable on the barrel of the firearm and in which a first silencer having an axial firing opening is coaxially arranged. The first silencer is arranged in the jacket tube to form an intermediate first annular space and has, at its barrel-side end, an oncoming flow cone which is penetrated by the firing opening and is located at an axial distance from the barrel, in order to deflect gases emerging divergently from the barrel into the annular space, which is provided with baffles and a gas outlet downstream the baffles.