What is the cyclic rate of fire for the M16A4 / M4 Carbine?

• A. 800 rounds per minute (approx.)
• B. 600 rounds per minute
• C. 900 rounds per minute
• D. 1000 rounds per minute

Answer: (A)

The cyclic rate of fire is the theoretical speed at which the firearm can fire if the trigger is held and the action keeps cycling without stoppages. It measures rounds per minute the weapon could deliver in continuous operation, not what you’d typically do in a real engagement.

For the M16A4 and M4 Carbine, the gas-operated, rotating-bolt system cycles the action quickly, with a full firing cycle taking about 0.075 seconds. That yields roughly 800 rounds per minute. This figure is a standard training reference because it represents the typical mechanical capability of these rifles under normal conditions. In practice, actual fire rates are lower due to heat buildup, fouling, and operator control.

Other listed numbers fall outside the common reference: 600 rpm is slower than the normal cycle speed, 900 rpm is higher than the usual training reference though possible momentarily, and 1000 rpm is beyond what these rifles reliably sustain under normal conditions.