Most agents are now using a Glock 19, which is a 9 mm semiautomatic pistol as their primary weapon. They also train with and are authorized to carry M16 rifles. Agents must attend at least four mandatory qualification sessions a year under the direction of FBI-trained and -certified firearms instructors. During these training sessions, agents shoot their issued and personally owned weapons and the rifle. They may also shoot the shotgun but only for familiarization; studies have shown that the weapon is not as accurate as the rifle.
