That doesn't look very like a Gunlance, we see no shield, for starter, and that magazine is bowgun-exclusive feature, even on Hapuru Gunlance which look similar to a rifle, there is no magazine. The shaft too thin to be a Gunlance as well, Bamboo is a joke weapon, so its no count, the handle is in wrong position to be a Gunlance, the bayonet can be purely decoration, or means for a close range bashing attack. Lastly, with that Gunner type Narga armor, i say this is a Heavy Bowgun, not Gunlance, removes the tag