Heavy weapon cooldown exploit, can also melee and aimglide

[Xenophil]

1. Equip your Heavy weapon;
2. Waste some ammo to add to a cooldown timer (this part can be skipped);
3. Use an ability that removes weapon model from your hands (for example Protea's grenades or dispensary);
4. Equip a gear item (for example Synthesis scanner);
5. Equip it again to go back to your heavy weapon.

Result: Your heavy weapon is reloaded, an archgun cooldown timer is triggered so you can call another archgun whenever you want. Also you can use melee and aimglide without penalty.