Help: Topoff Usage topoff Topoff uses your ammo bin to refill the guns you are wielding. It checks your main-hand and off-hand firearms, then moves matching stowed rounds toward each gun's capacity. Requirements - At least one wielded firearm. - Matching ammo stored in your ammo bin. - Enough movement to work the rig. Failure A failed skill check costs part of the movement and applies skill recovery. If your guns are already full, or your bin lacks matching ammo, no rounds move. See also: ammo, stow, reload, shoot