Firearms have a lower frame including a trigger and a grip, an upper frame including a barrel and a bolt, and a magazine receptacle configured to receive a magazine and positioned between the upper and lower frames. The lower frame and upper frame may each have forward portions pivotally connected to each other to form a pivotal connection. The pivotal connection may be operable to pivot on a horizontal axis transverse to the firearm. The upper and lower frames may be movable between an open position in which the upper and lower frame are angularly separated from each other and the magazine receptacle is accessible for removal and replacement of a magazine, and a closed position in which the magazine is closely received between the upper and lower frames. The magazine receptacle may be laterally open on both sides of the firearm.

Firearms have a lower frame including a trigger and a grip, an upper frame including a barrel and a bolt, and a magazine receptacle configured to receive a magazine and positioned between the upper and lower frames. The lower frame and upper frame may each have forward portions pivotally connected to each other to form a pivotal connection. The pivotal connection may be operable to pivot on a horizontal axis transverse to the firearm. The upper and lower frames may be movable between an open position in which the upper and lower frame are angularly separated from each other and the magazine receptacle is accessible for removal and replacement of a magazine, and a closed position in which the magazine is closely received between the upper and lower frames. The magazine receptacle may be laterally open on both sides of the firearm.

Firearms have a lower frame including a trigger and a grip, an upper frame including a barrel and a bolt, and a magazine receptacle configured to receive a magazine and positioned between the upper and lower frames. The lower frame and upper frame may each have forward portions pivotally connected to each other to form a pivotal connection. The pivotal connection may be operable to pivot on a horizontal axis transverse to the firearm. The upper and lower frames may be movable between an open position in which the upper and lower frame are angularly separated from each other and the magazine receptacle is accessible for removal and replacement of a magazine, and a closed position in which the magazine is closely received between the upper and lower frames. The magazine receptacle may be laterally open on both sides of the firearm.

Firearms have a lower frame including a trigger and a grip, an upper frame including a barrel and a bolt, and a magazine receptacle configured to receive a magazine and positioned between the upper and lower frames. The lower frame and upper frame may each have forward portions pivotally connected to each other to form a pivotal connection. The pivotal connection may be operable to pivot on a horizontal axis transverse to the firearm. The upper and lower frames may be movable between an open position in which the upper and lower frame are angularly separated from each other and the magazine receptacle is accessible for removal and replacement of a magazine, and a closed position in which the magazine is closely received between the upper and lower frames. The magazine receptacle may be laterally open on both sides of the firearm.

Firearms have a lower frame including a trigger and a grip, an upper frame including a barrel and a bolt, and a magazine receptacle configured to receive a magazine and positioned between the upper and lower frames. The lower frame and upper frame may each have forward portions pivotally connected to each other to form a pivotal connection. The pivotal connection may be operable to pivot on a horizontal axis transverse to the firearm. The upper and lower frames may be movable between an open position in which the upper and lower frame are angularly separated from each other and the magazine receptacle is accessible for removal and replacement of a magazine, and a closed position in which the magazine is closely received between the upper and lower frames. The magazine receptacle may be laterally open on both sides of the firearm.

Firearms have a lower frame including a trigger and a grip, an upper frame including a barrel and a bolt, and a magazine receptacle configured to receive a magazine and positioned between the upper and lower frames. The lower frame and upper frame may each have forward portions pivotally connected to each other to form a pivotal connection. The pivotal connection may be operable to pivot on a horizontal axis transverse to the firearm. The upper and lower frames may be movable between an open position in which the upper and lower frame are angularly separated from each other and the magazine receptacle is accessible for removal and replacement of a magazine, and a closed position in which the magazine is closely received between the upper and lower frames. The magazine receptacle may be laterally open on both sides of the firearm.

An intrinsically safe firearm may include a handle and a frame connected by a pivot pin. One or more latches of the firearm can temporarily fix the firearm in a stowed orientation or a deployed orientation. In the deployed orientation, a magazine of the firearm can be removed from the handle; a slide of the firearm can be removed from the frame; a magazine safety allows a firing pin to strike a primer of a round in the firearm; and a trigger of the firearm is accessible to discharge the round in the firearm. In the stowed orientation, the magazine is not removable from the handle; the slide is not removable from the frame; the magazine safety prevents the firing pin from striking the primer; and the trigger of the firearm is not accessible.

An intrinsically safe firearm may include a handle and a frame connected by a pivot pin. One or more latches of the firearm can temporarily fix the firearm in a stowed orientation or a deployed orientation. In the deployed orientation, a magazine of the firearm can be removed from the handle; a slide of the firearm can be removed from the frame; a magazine safety allows a firing pin to strike a primer of a round in the firearm; and a trigger of the firearm is accessible to discharge the round in the firearm. In the stowed orientation, the magazine is not removable from the handle; the slide is not removable from the frame; the magazine safety prevents the firing pin from striking the primer; and the trigger of the firearm is not accessible.

An intrinsically safe firearm may include a handle and a frame connected by a pivot pin. One or more latches of the firearm can temporarily fix the firearm in a stowed orientation or a deployed orientation. In the deployed orientation, a magazine of the firearm can be removed from the handle; a slide of the firearm can be removed from the frame; a magazine safety allows a firing pin to strike a primer of a round in the firearm; and a trigger of the firearm is accessible to discharge the round in the firearm. In the stowed orientation, the magazine is not removable from the handle; the slide is not removable from the frame; the magazine safety prevents the firing pin from striking the primer; and the trigger of the firearm is not accessible.

An intrinsically safe firearm may include a handle and a frame connected by a pivot pin. One or more latches of the firearm can temporarily fix the firearm in a stowed orientation or a deployed orientation. In the deployed orientation, a magazine of the firearm can be removed from the handle; a slide of the firearm can be removed from the frame; a magazine safety allows a firing pin to strike a primer of a round in the firearm; and a trigger of the firearm is accessible to discharge the round in the firearm. In the stowed orientation, the magazine is not removable from the handle; the slide is not removable from the frame; the magazine safety prevents the firing pin from striking the primer; and the trigger of the firearm is not accessible.