Which caliber is used by M61A1 and M61A2?

Which caliber is used by M61A1 and M61A2?

• A. 50 Cal
• B. 20 mm
• C. 25 mm
• D. 30 mm

Answer: (B)

Caliber is the bore diameter of the gun, i.e., the size of the projectile it fires. The M61A1 and M61A2 are variants of the M61 Vulcan, which is a 20 mm rotary cannon mounted on many U.S. fighter aircraft. That 20 mm designation means the gun fires 20-millimeter rounds. The other calibers listed (.50, 25 mm, and 30 mm) are different weapons with their own bore sizes, but they are not the caliber of the M61 Vulcan. The M61’s high rate of fire comes from its six rotating barrels, which is a hallmark feature of this 20 mm system.

Caliber is the bore diameter of the gun, i.e., the size of the projectile it fires. The M61A1 and M61A2 are variants of the M61 Vulcan, which is a 20 mm rotary cannon mounted on many U.S. fighter aircraft. That 20 mm designation means the gun fires 20-millimeter rounds. The other calibers listed (.50, 25 mm, and 30 mm) are different weapons with their own bore sizes, but they are not the caliber of the M61 Vulcan. The M61’s high rate of fire comes from its six rotating barrels, which is a hallmark feature of this 20 mm system.