Abstract: A firearm assembly comprising a frame assembly, a modular hammer and safety assembly, a slide receiver, and a barrel assembly, said hammer and safety assembly and said frame assembly having slide structures for cooperative connection to the slide receiver, the hammer and safety assembly further including an ejector mechanism, a hammer, a spring biasing the hammer, a sear for retaining the hammer in a cocked position, a disconnector assembly operable to prevent actuation of the sear during a cocking operation, and a safety device selectively moveable to a position preventing firing of the firearm, the slide receiver having safety actuator means thereon to actuate the hammer and safety assembly safety means, and having cam means thereon for actuation of the hammer and safety asssembly disconnector assembly, the hammer and safety assembly being interconnected such that the hammer and safety assembly may be withdrawn, or inserted into, the frame assembly as a unitary modular unit, the frame assembly being adapted

Abstract: A reversible magazine latch system for pistols having a grip portion in which there is provided a cavity for a magazine, the system comprising a latch seat extending through the pistol, a magazine latch assembly adapted for disposition in and retention by the seat in selectively a right or left hand orientation, and a magazine adapted to be engaged by the latch assembly.