For the M2 heavy machine gun, what describes its cyclic rate and operation pattern?

• A. 40 rpm, 3-5 rd burst, 4-5 sec pause
• B. 450-550 rpm, continuous burst, barrel change every 30 min or if damaged
• C. 325-375 rpm, continuous burst
• D. 60 rpm, 3-5 end burst, 2-3 sec pause

Answer: (B)

The M2 heavy machine gun is designed for sustained, high-rate fire, with heat management built into its operation. Its cyclic rate is about 450–550 rounds per minute, which lets it deliver continuous fire when needed. Because it heats up quickly in sustained use, barrels are changed roughly every 30 minutes of continuous firing, or sooner if the barrel shows damage or excessive wear. This combination—a high, constant rate of fire with a regular barrel change requirement—is what sets its operation apart in practice. Other options describe rates or burst patterns that don’t match how the M2 is intended to be used.