A firearm with identification, safety system, preventing use by an unauthorized user. The firearm includes a scanner capable of scanning a middle and ring finger on the grip of the gun; a memory chip means for means for storing data representative of at least one fingerprint; a microprocessor connected to said scanner and said memory chip for receiving and transmitting said data, a motor means for keeping metal plate position behind the trigger until said microprocessor authenticates said fingerprint with said data; a USB port provided as an electronic interface between the microprocessor and provided preprogrammed handdrive to utilize administrative and programming function; an external computer access which is used to enhance future programing and reset the microprocessor; a power battery unit means operatively connected to said system and act as a power source; and indicator means operatively connected to said power battery for indicating low battery condition.

A firearm with identification, safety system, preventing use by an unauthorized user. The firearm includes a scanner capable of scanning a middle and ring finger on the grip of the gun; a memory chip means for means for storing data representative of at least one fingerprint; a microprocessor connected to said scanner and said memory chip for receiving and transmitting said data, a motor means for keeping metal plate position behind the trigger until said microprocessor authenticates said fingerprint with said data; a USB port provided as an electronic interface between the microprocessor and provided preprogrammed handdrive to utilize administrative and programming function; an external computer access which is used to enhance future programing and reset the microprocessor; a power battery unit means operatively connected to said system and act as a power source; and indicator means operatively connected to said power battery for indicating low battery condition.

Methods, systems, and apparatuses for interchangeable, customizable, and suitable grips for firearms are described. In some embodiments, the grip includes two components, a grip base piece and an interchangeable grip (e.g., an interchangeable grip attachment) of the firearm user's choice. The grip base piece attaches to the lower receiver held by a pistol grip screw and a lock washer. In some examples, the grip base piece may only be installed once, for example, initially prior to implementation of interchangeable grips (e.g., the grip base piece may not require any other attention or installation changes after the initial placement onto the lower receiver). Following the installation of the grip base piece on the lower receiver, interchangeable grips of users' choice may be connected to the grip base piece (e.g., and interchanged with other interchangeable grips) via utilizing a grip interface (e.g., a T-shaped mating tab of the interchangeable grip).

Methods, systems, and apparatuses for interchangeable, customizable, and suitable grips for firearms are described. In some embodiments, the grip includes two components, a grip base piece and an interchangeable grip (e.g., an interchangeable grip attachment) of the firearm user's choice. The grip base piece attaches to the lower receiver held by a pistol grip screw and a lock washer. In some examples, the grip base piece may only be installed once, for example, initially prior to implementation of interchangeable grips (e.g., the grip base piece may not require any other attention or installation changes after the initial placement onto the lower receiver). Following the installation of the grip base piece on the lower receiver, interchangeable grips of users' choice may be connected to the grip base piece (e.g., and interchanged with other interchangeable grips) via utilizing a grip interface (e.g., a T-shaped mating tab of the interchangeable grip).

A firearm grip with selector switch lock includes a handgrip for engaging a firearm receiver having a selector switch. A switch engagement unit is positioned within the handgrip. The switch engagement unit including a motor, piston, spring and detent for selectively engaging the selector switch of the receiver to which the handgrip is located. An RFID interrogator is positioned within the handgrip and communicates with a portable RFID chip. Upon detecting the presence of the RFID chip, the switch engagement unit moves the piston to the retracted position for manual free operation of the selector switch. Upon detecting the RFID chip is not within the proximity of the handgrip, the switch engagement unit moves the piston to the extended/SAFE position. A replacement selector switch having a torque limiter is provided.

A firearm grip with selector switch lock includes a handgrip for engaging a firearm receiver having a selector switch. A switch engagement unit is positioned within the handgrip. The switch engagement unit including a motor, piston, spring and detent for selectively engaging the selector switch of the receiver to which the handgrip is located. An RFID interrogator is positioned within the handgrip and communicates with a portable RFID chip. Upon detecting the presence of the RFID chip, the switch engagement unit moves the piston to the retracted position for manual free operation of the selector switch. Upon detecting the RFID chip is not within the proximity of the handgrip, the switch engagement unit moves the piston to the extended/SAFE position. A replacement selector switch having a torque limiter is provided.

A modular handgun system comprises an elongated universal trigger frame having a barrel locking block, a pair of slide rails, and an accessory rail. The trigger frame is adapted to have a trigger assembly mounted thereto. The system further comprises a grip frame having an elongated channel and a hand grip extending downwardly from the elongated channel. The trigger frame is removably mounted in the elongated channel of the grip frame. The accessory rail of the trigger frame is positioned forward of a forward end of the elongated channel of the grip frame so as to be exposed. The system further comprises a slide and barrel assembly slidably mounted on the slide rails of the trigger frame.

A modular handgun system comprises an elongated universal trigger frame having a barrel locking block, a pair of slide rails, and an accessory rail. The trigger frame is adapted to have a trigger assembly mounted thereto. The system further comprises a grip frame having an elongated channel and a hand grip extending downwardly from the elongated channel. The trigger frame is removably mounted in the elongated channel of the grip frame. The accessory rail of the trigger frame is positioned forward of a forward end of the elongated channel of the grip frame so as to be exposed. The system further comprises a slide and barrel assembly slidably mounted on the slide rails of the trigger frame.

A firearm lower receiver and method of use may include a screw disposed to engage a pin housing in an upper receiver to minimize rattling or vibration between the upper receiver and the lower receiver.

A firearm lower receiver and method of use may include a screw disposed to engage a pin housing in an upper receiver to minimize rattling or vibration between the upper receiver and the lower receiver.