A wear surface assembly configured for use in a firearm receiver is disclosed. The disclosed assembly may include one or more wear surface members configured to be disposed within a receiver such that they physically intervene between the internal sidewalls of the receiver and either (or both) of the bolt carrier and cam pin head. In this manner, the disclosed assembly may serve to concentrate on itself any friction from the bolt carrier and cam pin head which otherwise would produce unwanted wear on the interior sidewalls of the receiver. The disclosed assembly may be configured to provide coverage of the receiver walls for the bolt carrier and cam pin head along the full (or at least partial) length of travel of the bolt carrier. The disclosed assembly further may include one or more retention pins configured to prevent the wear surface member(s) from dislodging from the receiver.

A firearm optics mount is configured to position an optic device on a firearm in a position offset from vertical alignment above the barrel when the firearm is in the vertical position. The canted mount includes a base, a support, and an optic mount at the end of the support. The support is configured to offset the optic between 5 and 30 degrees from vertical alignment with the barrel when the firearm is vertically positioned. The support may be configured to offset the optic between 12 and 22 degrees. The base of the mount may include a rear sight. The optic mounted to the firearm via the canted mount may be a primary or only optic of the firearm. The mount may vertically align a bullet drop feature of an optic with the centerline of the barrel when the firearm is canted to position the optic vertically above the barrel.

A mounting system securing a firearm sight to a firearm accessory rail includes a clamp with a downwardly open rail cavity for slidably engaging the rail. The sight is matched to a plate with pins that correspond to the sockets on the bottom of the sight, and the plate has sockets that correspond to pins on a base that contacts the rail. The clamp extends through the base and plate allowing the sight to be secured to the clamp. Securing the sigh to the clamp compresses the base, plate, and sight toward the rail, placing the system in tension to hold the sight to the firearm.

A trajectory correcting device includes a first trajectory adjustment mechanism and a second trajectory adjustment mechanism. The first trajectory adjustment mechanism is configured to change an angle between a mounting member and a sight or a second mounting member. The second trajectory adjustment mechanism is configured to rotate the sight or mounting member about an axis different than the adjustment axis of the first trajectory adjustment mechanism.

A fore grip for a firearm houses a light source and power source. The light source is preferably a laser and the power source is preferably one or more batteries. A first switch is connected to a PCB and can be moved to respective positions that correspond to each of various operating conditions, such as continuously on, continuously off, and on when a second switch is activated.

A modular dovetail rail clamping assembly includes a polymer body and a metal fixed clamp component. A threaded fastener extends through the body and into the fixed clamp component to draw the fixed clamp component into engagement with the body. The fixed clamp component and the body have mating longitudinal ridge and groove structures which rigidly fix alignment of the fixed clamp component relative to the body when assembled. A metal movable clamp component opposes the fixed clamp. A threaded clamping fastener extends through the movable clamp component and the body, and is received into the fixed clamp component to draw the movable clamp component into engagement with the body. A removable, reversible crossbar extends transversely across the body between the fixed clamp component and the movable clamp component.

Head up displays are provided. A head up display may have a base adapted for mounting to a firearm; a window positioned by the base so that a user of the firearm can observe a field of view through the window; an illuminator operable to generate a divergent illumination light; a light valve configured to modulate the divergent illumination light in accordance with an image provided by an image generator; and a collimating optic in an optical path between the light valve and the window that substantially collimates the image modulated illumination light. The window reflects at least a portion of the image modulated collimated light so that the observer observes the image substantially in focus with objects in field of view. Images presented may include data and images, including but not limited to thermal images.

Rail interface systems and methods of mounting accessories to a firearm therewith. The rail interface systems are configured to be installed on a firearm equipped with a first firearm accessory mounted to the firearm with at least one mounting assembly. The rail interface system includes a rail interface configured to couple with a second firearm accessory, and rail fasteners configured to secure the rail interface to the mounting assembly of the first firearm accessory.

A dual clamping device.

Electronic devices for use with deterrent devices are provided. In one aspect the electronic device has a housing, a finger engagement surface shaped to receive a portion of a finger and formed in part by a first contact member movably associated with the housing and in part by a second contact member movably associated with the housing and a control system that determines an output of the electronic device by sensing a movement of at least one of the first contact member and the second contact member. The first contact member, the second contact member and the finger engagement surface are configured so that the portion of the finger received by the finger engagement surface can be urged against a first part of the finger engagement surface to move the first contact member in a manner that can be sensed, can be urged against a second part of the finger engagement surface to move the second contact member in a manner that can be sensed, and can be urged against a third portion of the finger engagement surface to move both the first contact member and the second contact member in a manner that can be sensed.