This allows you to offset more of the negative effects of carrying many weapons.
The class has another major benefit as it is the class with the highest carry weight capacity.
Damage to your target is also increased when using Adrenaline Rush.
You can use the Adrenaline Rush power which slows down time, temporarily allowing you to line up good shots and zero in on enemies quickly.
Disruptor Ammo causes extra damage to shields and to synthetic enemies.
Concussive Shot allows you to fire a high powered shot stunning enemies for a few seconds.
Incendiary Ammo lights enemies on fire, dealing extra damage and stopping health regeneration.
In Mass Effect 2 cryo ammo froze enemies but in Mass Effect 3 it does that and it weakens enemy armor, slowing your enemies down. They can also use cryo ammo, which is now even better than it was in Mass Effect 2.
They can exclusively use frag grenades that rip enemies apart and cause massive damage.