In the past I noticed that if you pressed the "switch gun / launcher" key when you had your primary weapon equipped, it would seem to sometimes switch to a laser designator first instead of a launcher. However, after some testing, it seems that there is some strange behavior as to how the keybind works depending on what order the launcher and laser designator is put into your inventory. Binoculars and range finders are not affected. This behavior does not happen in the virtual arsenal when you spawn with a primary weapon, laser designator, and launcher. In the virtual arsenal the keybind works properly where the "switch gun / launcher" swaps between the primary weapon and the launcher and never equips the laser designator.