Devices, apparatus, systems and methods for providing accurate linear and angular positioning with a payload mounted to a beam having freely moveable ends. The payload can be a laser pointer mounted on a firearm, which maintains the initial precise pointing during and after exposure in high G shock and vibration environments. Vertical and lateral adjustment controls can adjust minute changes in beam orientation. Precision adjustments can be performed in a zero G, one G, or high G environment and maintains the adjustment during and after being exposed to a high G shock or vibration environment.

An accessory mounting interface for a firearm, and a related method, are disclosed. The interface has a firearm accessory, a first elongated fastener, and a second fastener rotationally mated to the first elongated fastener. The first elongated fastener has right-handed threading and is arranged through a through hole in the firearm accessory with a first end extending below first and second halves of a first slot protrusion of the firearm accessory. The second fastener has a length greater than a width, the length measured along a longitudinal axis of the second fastener, the second fastener having a plurality of straight edges. At least one of the plurality of straight edges prevents the second fastener from rotating further than a closed position when the at least one of the straight edges abuts a sidewall of an elongated slot in the firearm.

A sight mechanism for firearms such as pistols, rifles and the like. The sight mechanism includes a sight member that has a rear sight that is vertically adjusted. The sight member can be mounted on a vertically moveable member that has a fixing member that sets the vertical position of the sight member. The vertically moveable member may, without limitation, be a pivoting member. The sight mechanism includes magnets that bias the vertical member against the fixing member so that the magnets maintain the sight at the vertical position defined by the fixing member.

A keymod mount, which is arranged for detachably coupling at a firearm having one or more keymod slots, includes a securing member and a locking member movably extended from the securing member. The securing member includes a mounting body having a top utility surface, and a coupling head downwardly extended from a bottom surface of the mounting body for slidably engaging with a narrow slot portion of the keymod slot to retain said mounting body on a top surface of the keymod slot. The locking member includes a locking body and a locking head downwardly extended from a bottom surface of the locking body for inserting into an enlarged slot portion of the keymod slot after the coupling head is engaged with the narrow slot portion thereof, so as to securely lock up the securing member on the firearm.

A sighting device for use with a digital display device and a firearm. The sighting device includes a mounting base adapted for attaching to the firearm. The sighting device further includes a camera disposed on the mounting base to capture video in a field of view, where the camera is capable of transmitting the captured video to the display device. The sighting device further includes a display mount disposed on the mounting base, where the display mount is capable of receiving and securing the digital display device.

A slide for a firearm includes a top surface and an optical sight mounting surface recessed into the top surface of the slide. At least one pin opening is defined through a portion of the optical sight mounting surface and is configured to receive a pin for attaching an optical sight to the slide. At least one sight attachment opening is defined through the optical sight mounting surface to serve as another connection point for the optical sight. The pin opening and the sight attachment opening allow the optical sight to be attached directly to the slide of the firearm.

Devices, apparatus, systems and methods for providing accurate linear and angular positioning with a payload mounted to a beam having freely moveable ends. The payload can be a laser pointer mounted on a firearm, which maintains the initial precise pointing during and after exposure in high G shock and vibration environments. Vertical and lateral adjustment controls can adjust minute changes in beam orientation. Precision adjustments can be performed in a zero G, one G, or high G environment and maintains the adjustment during and after being exposed to a high G shock or vibration environment.

A sighting device for use with a digital display device and a firearm. The sighting device includes a mounting base adapted for attaching to the firearm. The sighting device further includes a camera disposed on the mounting base to capture video in a field of view, where the camera is capable of transmitting the captured video to the display device. The sighting device further includes a display mount disposed on the mounting base, where the display mount is capable of receiving and securing the digital display device.

An accessory mounting interface for a firearm, and a related method, are disclosed. The interface has a firearm accessory, a first elongated fastener, and a second fastener rotationally mated to the first elongated fastener. The first elongated fastener has right-handed threading and is arranged through a through hole in the firearm accessory with a first end extending below first and second halves of a first slot protrusion of the firearm accessory. The second fastener has a length greater than a width, the length measured along a longitudinal axis of the second fastener, the second fastener having a plurality of straight edges. At least one of the plurality of straight edges prevents the second fastener from rotating further than a closed position when the at least one of the straight edges abuts a sidewall of an elongated slot in the firearm.