Abstract: An ordnance firing mechanism for striking detonators by a strike pin which is translatable relative to a support, the strike pin being driven in translation by actuation apparatus including a lever connected to the strike pin and pivotable relative to the support, a pivotable pawl able to release the lever 4, a propelling device acting on the lever and affixed to the support 1, a driver acting on the pawl and through it implementing rotation of the lever thereby arming the strike pin and releasing the lever, the driver including a control rod for translation relative to the support and having recesses cooperating with the pawl and with a heel cooperating with the lever.

Abstract: A weapon barrel muzzle brake (5) with elements for fixing the muzzle brake to a weapon barrel (4) having a forward muzzle end face with external coupling threading (9) in the external surface of the forward end of the barrel, and an externally cylindrical rest surface (7) between the external threading and the muzzle end face, the muzzle brake (5) having internal coupling threading (13) for engaging external coupling threading on a weapon barrel, a radially extending rest wall (15) for abutting the end face (10) of a weapon barrel muzzle, and an internally cylindrically rest surface (14) for fitting snugly over an external rest surface on a weapon barrel, and locking stop elements (16-19) for preventing rotation of the muzzle brake with respect to a weapon barrel.