Firearm assembly

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 comprising
• a housing,
• slide means extending from said housing,
• ejector means fixed to said housing,
• a hammer pivotally mounted in said housing,
• spring means disposed in said housing and biasing said hammer toward a firing position,
• a sear pivotally mounted in said housing and adapted to engage said hammer and retain said hammer in a cocked position against said spring bias,
• a disconnector means slidably mounted in said housing and operable to prevent actuation of said sear during a cocking operation, and
• safety means mounted in said housing and selectively movable between a first inactive position and a second position in which said safety means prevents firing of the firearm,
• said frame assembly having
• slide means thereon adapted for alignment with said hammer and safety assembly slide means to cooperatively constitute an elongated uninterrupted slide means adapted to receive said slide receiver,
• said slide receiver having
• slide means thereon adapted for slidable engagement with said frame assembly slide means and said hammer and safety assembly slide means,
• safety actuator means accessible for manipulation by an operator and operable to engage said hammer and safety assembly safety means for selective actuation of said safety means, and
• cam means for engagement with said disconnector means and operation thereof,
• said hammer and safety assembly being interconnected such that said hammer and safety assembly may be withdrawn, or inserted into, said frame assembly as a unitary modular unit,
• said slide receiver being adapted to lock said hammer and safety assembly to said frame assembly,
• said frame assembly further having
• a barrel mounting portion, and
• lock means for releasably locking said barrel assembly to said barrel mounting portion.