The rifling with eight lands and grooves belongs to which firearm?

The rifling with eight lands and grooves belongs to which firearm?

• A. M2
• B. MK19
• C. AR-15
• D. AK-47

Answer: (A)

Eight lands and grooves describe a barrel’s rifling pattern where eight raised lands and eight corresponding grooves spiral through the bore. This pattern is a deliberate choice to impart a stable spin to the bullet, improving accuracy at range and under recoil. The M2 Browning .50 caliber machine gun uses an eight-land, eight-groove rifling arrangement, a design that suits the large, high-velocity .50 BMG rounds and the machine gun’s need for reliable stability in sustained fire. Other firearms listed typically use different rifling counts, such as six lands and grooves or four, which helps distinguish the M2 based on this rifling characteristic.

Eight lands and grooves describe a barrel’s rifling pattern where eight raised lands and eight corresponding grooves spiral through the bore. This pattern is a deliberate choice to impart a stable spin to the bullet, improving accuracy at range and under recoil. The M2 Browning .50 caliber machine gun uses an eight-land, eight-groove rifling arrangement, a design that suits the large, high-velocity .50 BMG rounds and the machine gun’s need for reliable stability in sustained fire. Other firearms listed typically use different rifling counts, such as six lands and grooves or four, which helps distinguish the M2 based on this rifling characteristic.