M240B USMC Knowledge Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

M240B USMC Knowledge Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What is the primary role of the M240B in the Marine Corps? To provide sustained, accurate automatic fire in support of infantry and vehicle operations. What type of weapon is the M240B classified as? A belt-fed, air-cooled, gas-operated medium machine gun. What caliber round does the M240B fire? 7.62x51mm NATO. How is the M240B typically fed during operation? With disintegrating metallic link belts. What is the maximum effective range of the M240B on a point target with a tripod? 800 meters. 2 What is the maximum effective range of the M240B on an area target with a tripod? 1,800 meters. What is the cyclic rate of fire for the M240B? 650 to 950 rounds per minute, depending on the gas regulator setting. Why is it important to control the rate of fire on the M240B? To prevent overheating and maintain barrel integrity. What is the sustained rate of fire for the M240B? 100 rounds per minute, fired in 6- to 8-round bursts. How often should the barrel be changed during sustained fire? Every 10 minutes during sustained fire. What does headspace and timing ensure in the M240B? Safe and effective function of the bolt and firing pin mechanisms. 3 What is the total weight of the M240B with the bipod and no ammo? Approximately 27.6 pounds. What is the length of the M240B? Approximately 49 inches. How many major components make up the M240B? Seven. What is the purpose of the gas regulator on the M240B? To adjust the amount of gas used to cycle