Abstract: The present disclosure provides systems, devices, and techniques that can be implemented at a gun, such as an electromechanical gun. The gun may include a barrel located within a slide and a cylindrical spring enveloping the barrel. The barrel may be configured to act as a guide rod for the cylindrical spring, and the cylindrical spring may be configured to bias the slide in a forward battery position. The gun may include an electronic component such as an energy store, a processor, or a circuit board, located under the barrel and forward of the trigger when the gun is in an upright position. The gun may include a physical transmission medium that electronically couples the electronic component with an additional electronic component located rearward of the trigger, and the physical transmission medium may be at least partially encapsulated by a trigger guard.

Abstract: The present disclosure provides systems and techniques for identifying gun events. A gun event may include a nominal event, such as the discharging of a projectile or the ejecting of a cartridge shell, or an anomalous event, such as a misfire or a failure to feed. An apparatus may include a sensor that measures motion of a gun along multiple axes. The apparatus may identify a gun event based on the measured motion of the gun satisfying a motion condition. The motion condition may include an acceleration threshold value, and the measured motion of the gun may satisfy the motion condition based on a measured acceleration value exceeding the threshold acceleration value. The apparatus may transmit an electrical signal based on the measured motion of the gun satisfying the motion condition. The electrical signal may reset a charging circuit, increment a shot count, or decrement a round count.

Abstract: The present disclosure provides systems and techniques for an electromechanical sear that is implementable in a gun. The gun may include a fire control manager, and the fire control manager may identify a trigger break based on a trigger sensor, transmit, based on the trigger break, a first signal to a first actuator located in a displacement path of a sear, so as to cause the first actuator to be displaced in a first direction, and transmit, based on the trigger break, a second signal to a second actuator located in the displacement path of the sear, so as to cause the second actuator to be displaced in a second direction. The transmitting the first signal to the first actuator and the transmitting the second signal to the second actuator may cause displacement of the sear and firing of the gun.

Abstract: The present disclosure provides systems and techniques for generating incident reports. A device, such as a remote device, may receive data including multiple data fields, where a first data field contains a first data value uniquely identifying a gun, and where a second data field contains a second data value identifying a gunshot event. The device may process the data to determine i) a location of the gunshot event and ii) a time of the gunshot event. The device may generate an incident report based on the data, where the incident report indicates a use of force incident, the location of the gunshot event, and the time of the gunshot event. The device may encrypt the incident report using an encryption key to produce an encrypted version of the incident report, and the device may store the encrypted version of the incident report in a database.

Abstract: The present disclosure provides systems and techniques for communicating across electronic components of a device. The device may be a gun, and the device may encode messages to improve the security of the device. The device may obtain a first spreading code, encode, at a first electronic component, a first message according to the first spreading code to produce a first encoded message, transmit the first encoded message from the first electronic component to a second electronic component across a physical communication channel, decode, at the second electronic component, the first encoded message according to the first spreading code, and perform a first action in response to the decoding the first encoded message. The first action may include discharging electric charge from a capacitor bank, charging the capacitor bank, firing a projectile, arming the device, disarming the device, or transmitting data across an additional communication channel.

Abstract: The present disclosure provides techniques, systems, and devices that support indicating gun state information. One or more electronic components may be used to indicate the gun state information, and the electronic components may be coupled with a gun. The gun may identify a state of the gun based on a compute component including a data signal, and the compute component may be coupled with the gun. The gun may select a representation of the state of the gun, where the representation of the state of the gun is compatible with an electronic component coupled with the gun. The gun may indicate, at the electronic component and based on the compute component, the state of the gun with the representation of the state of the gun. Indicating the state of the gun may include displaying an icon, illuminating the electronic component with a color, or pulsating the electronic component.

Abstract: The present disclosure provides systems and techniques for managing an energy store at a gun. The gun may include an energy store management system for securing an energy store, such as a battery pack, within a cavity of the gun. The energy store management system may include a dense brace located at a lower end of the cavity, a compressible brace located at an upper end of the cavity, a lid, a gasket at the upper end of the cavity, and a hinge mechanism configured to close the lid such that the lid forms a seal with the gasket. The interior surface of the cavity may be tapered such that the frictional load between the surface of the energy store and the surface of the cavity is higher at the lower end of the cavity than at the upper end of the cavity.

Abstract: The present disclosure provides system and techniques that allow a device to be coupled with an electromechanical gun. The electromechanical gun may be physically coupled with a cradle of the device, and the electromechanical gun may be communicatively coupled with an electrical interface of the device. The device may include a display mechanism that is capable of visually conveying information, a power source configured to supply power to the display mechanism, an electrical interface configured to be coupled with an electromechanical gun so as to allow power to be directed from the power source to the electromechanical gun, and a processor configured to process incoming messages received from the electromechanical gun and transmit outgoing messages to the electromechanical gun. The processor may perform a handshake procedure with the electromechanical gun, and the processor may process the incoming messages or transmit the outgoing messages based on the handshake procedure.

Abstract: The present disclosure provides systems and techniques for determining a grip layout for a gun. The techniques include obtaining an image depicting a hand, obtaining calibration data associated with the image, calculating a real distance between a first landmark of the hand and a second landmark of the hand, and determining a grip layout for the gun based on the real distance between the first landmark and the second landmark. Calibration data may include a scale for the image or data that may be used to derive the scale, such as an object of known dimensions, an angular field of view, or a distance between the device used to capture the image and the hand. The grip layout may include a backstrap size, a sensor size, a sensor location on the gun, or any combination thereof.

Abstract: The present disclosure provides systems and techniques for an electromechanical trigger that is implementable in a gun. The gun may include a trigger mechanism, a trigger sensing mechanism, and a fire control manager. The fire control manager may identify a trigger break based on the trigger sensing mechanism generating a voltage, and the fire control manager may transmit a signal to an actuator mechanism based on the trigger break. A detent mechanism may be dislocated in response to a force applied to a trigger mechanism, and the trigger sensing mechanism may generate the voltage based on the dislocating of the detent mechanism. Dislocating the detent mechanism may correspond to satisfying a trigger break threshold. The actuator mechanism may be displaced in response to the signal, and displacing the actuator mechanism may result in a projectile being propelled from the gun.

Abstract: The present disclosure provides systems and techniques for an attachment that can be fastened to a gun. The attachment may include a top surface having a longitudinal axis and an aiming sight that is parallel with the longitudinal axis, a front surface having a latitudinal axis that is perpendicular to the longitudinal axis, the front surface including a muzzle aperture, a left surface, a right surface, and a fastening system. The fastening system may include a first mounting aperture of the left surface, a second mounting aperture of the right surface, and a locking pin capable of being positioned in the first mounting aperture and in the second mounting aperture such that the locking pin fastens the attachment to the gun. The attachment may be fastened to the gun such that the longitudinal axis is parallel with a longitudinal bore axis of the gun.

Abstract: The present disclosure provides systems and techniques for a fire control mechanism that is implementable in a gun. The fire control mechanism is operable to cause projectiles to be fired by the gun. The gun may include a trigger, a barrel defining a bore axis, a firing component, and an actuator configured to i) obstruct the firing component while in a default position and ii) be displaced in a direction that is substantially perpendicular to the bore axis in response to movement of the trigger, where displacement in the direction that is substantially perpendicular to the bore axis causes the firing component to be released and results in the gun firing a projectile. The gun may include an energy store located below the barrel when the gun is in an upright position, and the actuator may be displaced based on the energy store.

Abstract: The present disclosure provides systems and techniques for testing guns by simulating firing a round of live ammunition. A striker may be used to apply force onto a gun, and one or more compressible rods may be used to modulate the application of force onto the gun. A system may include a striking mechanism configured for displacement along an arcuate path of travel that includes a first compressible rod, a second compressible rod coupled with a first component of the gun, an attachment mechanism coupled with a second component of the gun such that the second compressible rod is located in the arcuate path of travel, and a backstop mechanism coupled with the attachment mechanism. The attachment mechanism may stably hold the gun and the backstop mechanism may accommodate planar movement of the attachment mechanism, so as to simulate a shooter holding the gun.

Abstract: The present disclosure provides systems and techniques for reducing power consumption at an electromechanical gun. The electromechanical gun may transition to an inactive state to reduce power consumption, and the electromechanical gun may transition to an active state to perform a system check procedure or to allow a projectile to be fired from the electromechanical gun. The electromechanical gun may identify a sleep event based on an analysis of an output of a first electronic component, compute an estimated time duration based on an amount of electric charge remaining in the energy store, set a sleep timer according to the estimated time duration, and transition to the inactive state by terminating a power supply of a second electronic component. The electromechanical gun may transition to the active state in response to the sleep timer elapsing or a second output indicating that a user is touching the electromechanical gun.

Abstract: The present disclosure provides systems and techniques for authenticating a user at gun. The gun may include an authentication manager capable of implementing logic, processing signals, or executing instructions. The authentication manager may receive first query data from a first authentication sensor of the gun, receive second query data from a second authentication sensor of the gun, perform an authentication procedure to determine whether the first query data or the second query data matches enrollment data, where a match is determined based on the first query data or the second query data and the enrollment data satisfying a similarity threshold. The authentication manager may determine that the user is authorized to operate the gun and transmit a signal in response to the determining that the user is authorized to operate the gun. The signal may cause the gun to enter an active state which allows the gun to be fired.

Abstract: The present disclosure provides systems and techniques for dynamically operating a peripheral component of a gun, such as a flashlight, an electronic sight, or a haptic motor. The gun may perform an authentication procedure to identify a user operating the gun, retrieve a configuration file from memory housed in the gun in response to the authentication procedure, and perform a function at the peripheral component based on the configuration file indicating that the function is to be performed for the user. The gun may collect authentication data, such as biometric data or token data, and the gun may identify the user operating the gun based on the authentication data. The user operating the gun may be identified in response to matching the collected authentication data to authentication data stored in the memory, and the gun may determine the function based on the configuration file indicating the function for the user.

Abstract: The present disclosure provides systems and techniques that can be implemented in a gun. The gun may include or be coupled with a slide cover. The slide cover may include a first slide cover recess along a latitudinal axis of the slide cover, the first slide cover recess comprising a first cavity of a first portion of the slide cover and a first cavity of a second portion of the slide cover. The slide cover may include a second slide cover recess along the latitudinal axis of the slide cover, the second slide cover recess comprising a second cavity of the first portion of the slide cover and a second cavity of the second portion of the slide cover. The slide cover may include a first retainer coupling a sight component with the slide cover such that a longitudinal axis of the sight component is substantially parallel with a longitudinal axis of the slide cover.

Abstract: 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.

Abstract: The present disclosure provides systems and techniques for authenticating biometric data while protecting user privacy. Aspects of the present disclosure include collecting biometric query data at a biometric sensor of the gun, generating a set of query features from the biometric query data, each query feature of the set of query features including a first number of dimensions, generating a projection matrix, each element of the projection matrix being drawn independently from an identical distribution having zero mean and unit variance, transforming the set of query features into a transformed set of query features according to the projection matrix, retrieving a transformed set of enrollment features from memory of the gun, identifying a data match based on the transformed set of query features and the transformed set of enrollment features satisfying a similarity threshold, and unlocking the gun in response to the identifying the data match.