The feed direction and ammunition box mountings may be changed in-field without additional components, and are also able to be dual-loaded: enabling selection of two different types of 40mm rounds on the fly.

Empty cartridge cases are ejected through an opening at the bottom of the AGL[2][6] Due to the parabolic trajectory path of the 40mm grenades used, it is possible to use the Y3 against a target that is out of the user's direct sight (such as over cover or obstacles, or around corners; up to an elevation of 60 degrees).

This indirect fire mode is, however, only realistically feasible during combat situations if the coordinates of its target are already known (for instance, calculated from a forward observation post); as otherwise the unit acts as a mortar (albeit with a relatively smaller lethal radius).

By calculating the position, direction, and the angle required for the AGL to hit a given target, the LobSight greatly assists aim modification: providing optimum grenade impact and ammunition usage.

If this data is unknown, the AGL may still be used to lay down suppressive fire against possible enemy locations but, again, at a reduced accuracy unless a laser sight or aiming scope is added.