AGLs are only of limited use for suppressive fire. Suppressive fire is meant to keep the enemy's head down while your own maneuver elements move into position.
Replacing suppressive fire with aimed fire - especially against targets in defilade - is only possible when you have the target's position, and enough time (for the airburst) to lay a rangefinder solution to it first. You can't apply that against a number of dispersed targets for example, unlike suppressive fire.
An AGL with somewhat more predictable income (around 4 seconds to 1,000 meters!), low on-weapon ammunition supply (32-round belts commonly in non-vehicle-mounted installations) and a large logistics and transportation footprint (in comparison) isn't exactly suited for such anyway.
Replacing suppressive fire with aimed fire - especially against targets in defilade - is only possible when you have the target's position, and enough time (for the airburst) to lay a rangefinder solution to it first. You can't apply that against a number of dispersed targets for example, unlike suppressive fire.
An AGL with somewhat more predictable income (around 4 seconds to 1,000 meters!), low on-weapon ammunition supply (32-round belts commonly in non-vehicle-mounted installations) and a large logistics and transportation footprint (in comparison) isn't exactly suited for such anyway.