Systems, devices, and methods are provided, wherein a device is attachable to or integrated in a firearm and includes a plurality of sensors that are each configured to sense a respective attribute of the firearm or of an environment surrounding the firearm, and are further configured to provide corresponding signals based on sensing the respective attribute. The systems, devices, and methods may be configured to determine an event from among a plurality of events based on the corresponding signals provided by the plurality of sensors. Systems that include the device may record event data and transmit the event data to various user systems for situational awareness, record keeping, training, and other organizational or legal-process purposes.

A firearm barrel tray having a barrel channel and a firearm accessory mounting interface, wherein the firearm barrel tray is configured to be attached to a firearm stock such that the barrel channel sits on a first side of the firearm stock and the firearm accessory mounting interface is configured to align with a recess on a second side of the firearm stock.

A firearm barrel tray having a barrel channel and a firearm accessory mounting interface, wherein the firearm barrel tray is configured to be attached to a firearm stock such that the barrel channel sits on a first side of the firearm stock and the firearm accessory mounting interface is configured to align with a recess on a second side of the firearm stock.

A firearm accessory attachment system and method are disclosed. The system has a first body having a longitudinal length, a first protrusion coupled to and extending from the first body in a first direction, and a second protrusion coupled to and extending from the first body in the first direction as the first protrusion, the second protrusion is a first longitudinal distance from the first protrusion. The system also has a second body having a third protrusion coupled thereto, the third protrusion extending in the first direction. The second body is slidable relative to the first body. The system is movable between a locked configuration having a first width and an unlocked configuration having a second width, the second width less than the first width, the first and second widths defined by a direction transverse relative to the longitudinal length.

A firearm accessory attachment system and method are disclosed. The system has a first body having a longitudinal length, a first protrusion coupled to and extending from the first body in a first direction, and a second protrusion coupled to and extending from the first body in the first direction as the first protrusion, the second protrusion is a first longitudinal distance from the first protrusion. The system also has a second body having a third protrusion coupled thereto, the third protrusion extending in the first direction. The second body is slidable relative to the first body. The system is movable between a locked configuration having a first width and an unlocked configuration having a second width, the second width less than the first width, the first and second widths defined by a direction transverse relative to the longitudinal length.

In combination with a hand-held firearm comprising a barrel having a longitudinal axis and a muzzle disposed at a distal end of the barrel, the improvement including a secondary viewing device with a housing coupled to the barrel of the firearm and having a first camera retained by, and disposed on a first side of, the housing of the secondary viewing device, disposed substantially adjacent to the muzzle of the firearm, and directed in a viewing orientation substantially orthogonal to the longitudinal axis of the barrel of the firearm for viewing targets lateral to the firearm, the secondary viewing device and the firearm operably configured to have simultaneous and omnidirectional rotation with one another by a user.

In combination with a hand-held firearm comprising a barrel having a longitudinal axis and a muzzle disposed at a distal end of the barrel, the improvement including a secondary viewing device with a housing coupled to the barrel of the firearm and having a first camera retained by, and disposed on a first side of, the housing of the secondary viewing device, disposed substantially adjacent to the muzzle of the firearm, and directed in a viewing orientation substantially orthogonal to the longitudinal axis of the barrel of the firearm for viewing targets lateral to the firearm, the secondary viewing device and the firearm operably configured to have simultaneous and omnidirectional rotation with one another by a user.

A wireless camera network is disclosed. The wireless camera network includes a first camera and one or more other cameras. After an input is received by the first camera, the first camera records images or video, and the first camera wirelessly transmits a start signal to one or more other cameras to also start recording images or video and to also wirelessly transmit the start signal.

A wireless camera network is disclosed. The wireless camera network includes a first camera and one or more other cameras. After an input is received by the first camera, the first camera records images or video, and the first camera wirelessly transmits a start signal to one or more other cameras to also start recording images or video and to also wirelessly transmit the start signal.

An electronic system for a firearm includes a power source, one or more electrical conductors electrically connected to receive power from the power source, and a plurality of electronic devices. Each electronic device has an electrical input configured to receive power from the one or more electrical conductors to power the electronic device. A communication device is configured for data communication across the one or more electrical conductors. In some embodiments data can be communicated at rates greater than 10 Mbps. Some embodiments utilize multi-frequency encoding, such as orthogonal frequency-division multiplexing. Some embodiments include a data communication device with a lower data communication rate and another data communication device with a higher data communication rate, and can selectively communicate through either data communication device. A method of communicating between electronic devices connected to a firearm includes powering a plurality of electronic devices connected to a firearm from a power source through one or more electrical conductors, and communicating data between the plurality of electronic devices across the one or more electrical conductors.