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M4A1

Region
United States
Category
Law enforcement, small arms and protection
The M4A1 incorporates the Rail Interface System II (RIS II) developed by Daniel Defense to meet US Special Operations Command requirements. The RIS II accommodates an M203 40mm underbarrel grenade launcher while allowing the barrel to free-float. The M4A1 has a 368mm cold hammer-forged barrel with an extended flash
suppressor.