What type of weapon is the M4?

The M4 is classified as both a gas-operated and shoulder-fired weapon, making it versatile and effective in various combat situations. As a gas-operated firearm, it utilizes the gases produced from fired cartridges to cycle the action, allowing for semi-automatic and fully automatic fire modes. This design enhances the reliability and efficiency of the weapon, making it suitable for rapid engagements.

Additionally, as a shoulder-fired weapon, the M4 is designed to be easily aimed and fired from the shoulder, ensuring better control and accuracy while on the move or in a standing position. This characteristic is crucial for infantry operations, where mobility and quick aiming can significantly impact mission success.

The other classifications, while specific to certain aspects of the M4, do not fully encompass its design and functionality. Being only an automatic rifle or just a gas-operated rifle fails to acknowledge its unique combination of features that make it a preferred choice among military personnel.