Which two firearm models can be fired in both semi-automatic and fully automatic modes?

The correct answer, which identifies the M14 and M16 as the two firearm models capable of being fired in both semi-automatic and fully automatic modes, reflects key characteristics of these weapons.

The M16 is a well-known service rifle for the U.S. military with configurations that allow it to operate in fully automatic, burst, or semi-automatic modes, depending on the variant. This versatility in firing options enhances combat effectiveness and adaptability to different operational requirements.

The M14 is also designed with a capability for both firing modes. It was used extensively as a military rifle and incorporates a gas-operated mechanism that supports semi-automatic and fully automatic firing, making it functional in diverse combat scenarios.

In comparison, the other firearm models listed do not possess the same versatility in fire modes. For example, the AK47 is primarily recognized for its automatic fire capability, particularly in military configurations, whereas civilian versions are often limited to semi-automatic fire. The M60 is a light machine gun primarily designed for automatic fire and does not typically feature a semi-automatic mode. The MP5 is a submachine gun known for its select-fire options, including semi-automatic and fully automatic, but it is distinct from both the M14 and M16 in terms