As a Counter-Terrorist, you have a choice between two primary rifles. Neither can one-shot a helmeted opponent, making recoil control even more vital.
The M4A1-S (Silenced): This gun has an incredibly tight, forgiving spray pattern. The first 15 bullets require only a slight pull downward. It is the ultimate laser beam for precise, long-range anchoring.
The M4A4: This gun fires faster and has more bullets, but a much wider spray pattern that closely mimics the AK-47 (up, then right, then left). Use this if you play close-quarters positions (like B-Apps on Mirage) where you need to spray down multiple enemies rushing you.