You have Hunker Down, Leg Shot, A knock back(Can't remember off the top of my head), A flash Grenade. oh no we don't have any way of defense.
Along with an armor reducer, 4 channeled/quick shots(Charged Burst with crit bonus ability, Aimed Shot, Quick(?)shot, Trick shot) designed for max burst damage to a single target. We have a DoT and Explosive charge, Thermal Grenade, and by the time you unleash all these abilities, pop quick draw to finish him off. and just pop cool head then and get ready for the next guy.
No, we can't kill people.
Yet from what your post is saying is that you're fairly high leveled already. So you know all this so I shouldn't have to explain it.
Yet why is it that I'm constantly in the 200-250k bracket of damage and 40-55 kills range, just smearing people on the walls with a level 28 under-armored ******, even though we can't do anything but damage?
Learn Class Roles. Area Denial. 2 GS's together about 10m apart are damn sure tough to fight through without more than 3 peeps.