Literally nothing there showed knives being made. Someone in front of a clean bench, things being put in drawers, close ups with machinery behind the person, and knives being flipped open.
Absolutely nothing there showed the construction of their knives. If they have the facility...why not show a CNC running specific parts, someone grinding blades, fitting lockbars, etc? This appears to have been shot in someone's machine shop.
"Making gun parts for friends" isn't the most solid of backgrounds for expert machining.
Notice they never say, "we're here at the Quartermaster factory/shop/whatever." Also, calling the video "unrehearsed" in the description on the site feels odd.