How many rounds fired continuously and rapidly through the M4 carbine can cause the weapon to heat up to the cook-off point?

The M4 carbine can reach the cook-off point after approximately 150 to 200 rounds fired continuously and rapidly without allowing for adequate cooling between bursts. This heating can lead to the risk of a round discharging unintentionally due to the heat of the barrel. It's crucial for operators to manage firing rates and allow for cooling periods to maintain safety and weapon integrity.