SRS99C-S2 AM sniper rifle/Gameplay
From Halopedia, the Halo wiki
The SRS99C-S2 sniper rifle is extremely powerful, but with a small combat load, it is not good practice to use this weapon against weaker enemies (i.e. Grunts, Drones). However, the sniper rifle's penetration capabilities and superb, long range accuracy makes it excellent for killing higher ranking enemies at long range, which, in turn, disorganizes and demoralizes the enemy troops, making combat against a large ground force much easier.