[@Keileon]

The action of aiming and firing a gun leans towards the faster side of things, which can already be a pain in the arse; of course, there's the usual gunner vs target argument, which revolves around not being in front of the gun's barrel before it even fires; and there's stuff like smokebombs to break line of sight in abscence of any other means, which most characters have access to in one form or another. That doesn't change the fact that it's a borderline powerful tool, especially if ou consider that the gunner himself can take countermeasures as well. Sneaky stuff like through-the-pocket shots or just deploying a smokebomb and immediately firing through the veil; or plain practical semi-auto fire. Credit where it's due though, consecutive shots from Mitsu's gun are weaker.