A shock absorbing mount on a gun using a camera system for training a shooter. The mount includes a mounting bracket with an upper portion having an opening defined therein for firmly mechanically attaching to at least one barrel of a gun and a lower portion for firm mechanically attaching to a tube assembly. The tube assembly is adapted to slidably mount carriage assembly of a camera therein. The tube assembly includes a first end with a first captive cap holding a lens window directed toward a gun front sight when mounted on the gun, the first end including a load transfer ring positioned between the first captive cap and a carriage assembly body of the camera. A programming system is also disclosed to translate a relative position of the generated reticule overlay relative to a generated graticule overlay using the offset previously stored.

A system includes a mounting portion with a planar elongated geometry and an accessory portion having a geometry similar to the mounting portion. The mounting portion includes an alignment recess formed centrally on one side of the mounting portion to extend partially into a thickness of the mounting portion, a mount-side magnet seat formed in the one side of the mounting portion, and a mount-side magnet disposed in the mount-side magnet seat. The accessory portion includes an alignment projection formed centrally on one side of the accessory portion to extend outward from the accessory portion to engage with the alignment recess to align the accessory portion with the mounting portion, an accessory-side magnet seat formed in the one side of the mounting portion, and an accessory-side magnet disposed in the magnet seat to engage with the mount-side magnet to removably secure the accessory portion relative to the mounting portion.

A device for achieving linear movement in a single direction and stiffness in all other directions. As an example, a recoil causes strong forces in a linear movement, but any ridges will produce errors as two units each try to return to its original position. The device is a damper. The linear displacement by a recoil is mitigated using two set of blades, one absorbing the linear recoil, and a second for hindering the linear parallel deflection of the first set by the recoil or for increasing the stiffness provided by the first set of blades. The produced errors are much smaller or none as the recoil is mitigated using the very strong damper.

Devices mountable to a rail having a recoil groove are provided. In one aspect a device mountable to a rail having a recoil groove has a rail positioner having a longitudinal length with a plurality of teeth arranged along an edge of the longitudinal length and a recoil groove insert extending away from the rail positioner and configured to be inserted into the recoil groove, a first body member having a first rail engagement surface and plurality of openings generally sized to receive the plurality of teeth and arranged along a length of the first body a second body member having a second rail engagement surface opposite the first body member, and a clamping structure operable to tighten and maintain a clamping force between the first body member and the second body member when the rail positioner is arranged in therein and that can be released facilitate installation and removal of the mounting to a rail.