Abstract: The invention proposes a trigger assembly known as a "double-action" assembly, like that used in pistols, for a rifle, with this assembly being designed for use in a rifle in such manner that the hammer is located ahead of the trigger. Such a trigger assembly in a rifle both ensures that the rifle can be fired rapidly and also prevents a shot from being fired inadvertently.

Abstract: A long or short firearm wherein an essential part for the firing of ammunition can be disconnected from the housing to be replaced with an attachment which carries a laser. The laser is operated to emit a beam of radiation against a selected target in response to depression of the trigger which is carried by the housing. A circuit is provided to determine the duration of emission of radiation in response to depression of the trigger. The energy source or sources for the laser can be confined in the magazine of the housing and/or in the attachment. A sight on the attachment assumes the same position with reference to the housing as a sight of the detachable essential part when the attachment is connected to the housing in lieu of the essential part. The essential part can include the barrel and the firing chamber of a short firearm or the bolt action of a long firearm.