I guess, but the mortarmen carry mortars, and that looks extremely large to be carried as a mortar and deployed wherever.
However the Japanese AT gun weighs a ton IRL, and they carry that thing around like its nothing, so this wouldn’t be a giant stretch of the imagination at this point.
The 300 kg (660 lb), 1.5 m (4 ft 11 in), 330 mm (13 in) shells fit around and on top of the tube, instead of being dropped inside, making this a spigot mortar.
didnt even pay attention to the part where they said it was mounted on top of the barrel. kinda weird mortar considering most spigots go into the tube, but this one is probably different cause of the weight and need to assemble it in parts.