A frame assembly for a pistol with a lock lever. The frame assembly includes a lower frame having a grip and an upper frame assembled on the lower frame and to a slide. The lower frame has: a mounting projection projecting upward to face the upper frame; and a lever mounting unit separated from the mounting projection and projecting upward. The upper frame has: a mounting groove into which the mounting projection is inserted to face the lower frame, and a lever hooking hole at one side of the mounting groove. The lever mounting unit has a lock lever having one end locked to be rotatable by a lock pin and the other end elastically supported to project upward. When the upper frame is assembled to the lower frame, the other end of the lock lever is inserted into the lever hooking hole and the upper frame is locked.

A modular handgun system comprises an elongated universal trigger frame having 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 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.

Presented are a firearm attachment and a method. An exemplary firearm attachment includes a gunstock comprising a cavity for attachment to a barrel, a handgrip port including a mount, a buttstock port, and a magazine port, the magazine port located on the gunstock to align with a magazine, the mount operable to slideably move and be affixed along a longitudinal axis of the gunstock. The firearm attachment further includes a handgrip, the handgrip removeably attached to the mount, the handgrip able to rotate relative to the gunstock to a plurality of locations, wherein the handgrip can be rotatably fixed at each one of the plurality of locations. The firearm attachment also includes a buttstock and a forearm grip.

A firearm includes a trigger and a handle. The handle is configured to be gripped by the hand of a user of the firearm. The handle includes a front portion located under the trigger and facing the firing direction, a back portion located on a rear side of the handle facing a direction opposite of the firing direction, and primary and secondary side portions located between the front portion and the back portion. The primary side portion is configured to receive the shooting hand of the user and the secondary side portion is configured to receive the support hand of the user. The secondary side portion includes an elongated ridge protruding away from a surface of the secondary side portion. The ridge is configured to engage a heel of the support hand thereby allowing the support hand to absorb a portion of a recoil force when the firearm is fired.

A firearm includes a trigger and a handle. The handle is configured to be gripped by the hand of a user of the firearm. The handle includes a front portion located under the trigger and facing the firing direction, a back portion located on a rear side of the handle facing a direction opposite of the firing direction, and primary and secondary side portions located between the front portion and the back portion. The primary side portion is configured to receive the shooting hand of the user and the secondary side portion is configured to receive the support hand of the user. The secondary side portion includes an elongated ridge protruding away from a surface of the secondary side portion. The ridge is configured to engage a heel of the support hand thereby allowing the support hand to absorb a portion of a recoil force when the firearm is fired.

A novel firearm constructed and arranged to selectively position into a firing configuration or one of two storage and carry configurations selected from either a rectangular or an in-line carry configuration.

An unfinished firearm frame having a top adapted to receive a slide. Where rear restriction protrusions extend from the top of the frame near a rear of the frame which restricts addition of the slide to the frame and front restriction protrusions extend from the top of the frame and forward of the at least one rear restriction protrusion which restricts addition of the slide to the frame. Where there is a recoil assembly block adapted to prevent a recoil assembly from being assembled into the frame. A jig having a right side and a left side to receive and clamp the frame. The jig including three pin hole guides, a removal guide edge for each of the at least one rear restriction protrusion and the at least one front restriction protrusion and a recoil assembly cutout to allow a tool to pass to the recoil assembly block.

An unfinished firearm frame having a top adapted to receive a slide. Where rear restriction protrusions extend from the top of the frame near a rear of the frame which restricts addition of the slide to the frame and front restriction protrusions extend from the top of the frame and forward of the at least one rear restriction protrusion which restricts addition of the slide to the frame. Where there is a recoil assembly block adapted to prevent a recoil assembly from being assembled into the frame. A jig having a right side and a left side to receive and clamp the frame. The jig including three pin hole guides, a removal guide edge for each of the at least one rear restriction protrusion and the at least one front restriction protrusion and a recoil assembly cutout to allow a tool to pass to the recoil assembly block.

The present disclosure provides systems and techniques for determining whether a user is holding a gun. The gun may include a sensor, such as a laser proximity sensor, a capacitive proximity sensor, a load cell, an accelerometer, or a biometric sensor, and the gun may determine whether a user is holding the gun based on an output generated by the sensor. A processor housed in the gun may identify activation of a proximity sensor, determine that a user is holding the gun based on the activation of the proximity sensor, and perform an action in response to determining that the user is holding the gun. The action performed by the processor may include performing a boot procedure, performing a health check procedure, visually indicating state information about the gun, audibly indicating state information about the gun, or tactilely indicating state information about the gun.