Points taken. However, these days computer-generated graphics can and do show the detailed operation of many firearms, including slow-motion segments of the interior parts during firing. I’ve seen a couple of the Gyrojet pistol, unfortunately with some errors.
Webley has recently introduced a mind-blowing air gun that is so close to an original Mark VI .455 revolver, it’s scary. The revolver comes with six brass-case cartridges, each headstamped “Webley .455” and a speedloader. Extra sets of six rounds with a speedloader are available for $20 (Pyramyd Air). A compressed gas bottle goes in the handle to power the .177 BB “bullets” in the nose of each cartridge. The revolver can be fired single or double action, and breaks open for loading and unloading of spent rounds just like the original. The Webley web site has a CGI video (which is the point of this) that shows how to disassemble and reassemble the revolver, with the screws turning out and the individual parts moving out and away. All in motion, and all without buggering even one screw.
Of course the operation of firearms needs to be documented. We all agree on that. But why waste collectible cartridges in a video that really doesn’t show very much and that explains nothing?