The Marine Corps has begun fielding its new grenade launcher. The M320A1 is a single-fire system that can be employed as a stand-alone weapon or mounted onto another, such as the M27 Infantry Automatic Rifle. The weapon system will enable Marines to engage adversaries day or night. “The M320A1 is a 40-millimeter grenade launcher intended to replace the M203A2 currently used by the Marine Corps,” said Capt. Nick Berger, Marine Corps Systems Command’s project officer for the M320A1. “It is a weapon designed for the infantry fire team grenadier.”