Abstract: Technology is disclosed herein for part detection and augmented reality integration. A computing device displays in a user interface an image including a part. The computing device detects the part in the image and generates a parameter set based on the detection of the part in the image. In the user interface, the computing device displays an augmented reality depiction of the part overlaying the image based on the parameter set. In some implementations, to detect the part in the image, the computing device uses a neural network which is trained based on multiple images of the part in varying orientations. In some implementations, a second neural network is trained to generate a parameter set relating to the position and orientation based on the detection of the part based on parameter set data corresponding to the multiple training images.

Abstract: A firearm assembly comprises a frame defining a bolt passage; a barrel connected to the frame and extending forward of the frame; a bolt operable to reciprocate within the bolt passage between a forward battery position and rearward recoil piston; a forend structure connected to the frame forward to the frame and encompassing a portion of the barrel; a grip slidably connected to the forend structure and connected to the bolt; the grip operable to cycle the bolt between the forward battery position and the rearward recoil piston; and the forend structure including a plurality of parallel rods.

Abstract: A pistol with buffer has a frame defining an upper horizontal slide plane, having a forward muzzle end, and defining a receptacle, a slide rail module removably received in a rear portion of the frame receptacle and having a front face, a cross pin engaging the slide rail module to the frame, a buffer received in the frame receptacle and having a rear face abutting the front face of the slide rail module, and a retention portion of the slide rail module configured to contact the buffer to prevent extraction of the buffer when the slide rail module is received in the frame receptacle. The retention portion may be positioned above a selected portion of the buffer to prevent removal of the buffer from the frame when the slide rail module is engaged to the frame by the cross pin. The slide rail module may define a vertical front surface.

Abstract: A pistol with buffer has a frame defining an upper horizontal slide plane, having a forward muzzle end, and defining a receptacle, a slide rail module removably received in a rear portion of the frame receptacle and having a front face, a cross pin engaging the slide rail module to the frame, a buffer received in the frame receptacle and having a rear face abutting the front face of the slide rail module, and a retention portion of the slide rail module configured to contact the buffer to prevent extraction of the buffer when the slide rail module is received in the frame receptacle. The retention portion may be positioned above a selected portion of the buffer to prevent removal of the buffer from the frame when the slide rail module is engaged to the frame by the cross pin. The slide rail module may define a vertical front surface.

Abstract: A pistol with buffer has a frame defining an upper horizontal slide plane, having a forward muzzle end, and defining a receptacle, a slide rail module removably received in a rear portion of the frame receptacle and having a front face, a cross pin engaging the slide rail module to the frame, a buffer received in the frame receptacle and having a rear face abutting the front face of the slide rail module, and a retention portion of the slide rail module configured to contact the buffer to prevent extraction of the buffer when the slide rail module is received in the frame receptacle. The retention portion may be positioned above a selected portion of the buffer to prevent removal of the buffer from the frame when the slide rail module is engaged to the frame by the cross pin. The slide rail module may define a vertical front surface.