U.S. Military 50cal MACHINE GUN Barrel Comparison: M3AC M2HB M2WC M85CA #army #navy #airforce #gun

Published on February 2, 2024
Duration: 1:00

This video provides an expert comparison of four distinct .50 caliber machine gun barrels: the M3AC (aircraft, high cyclic rate, air-cooled), the M2HB (ground mount, lower cyclic rate), the M2WC (ground/naval, sustained fire, water-cooled), and the M85CA (General Electric design, selectable rate, used on M60 tanks). The instructor highlights key differences in application, cooling, and performance.

Quick Summary

The U.S. military utilizes several .50 caliber machine gun barrels, including the M3AC (aircraft, high cyclic rate, air-cooled), M2HB (ground mount), M2WC (water-cooled for sustained fire), and the M85CA (General Electric coaxial design). All are chambered in .50 BMG.

Chapters

  1. 00:00Introduction to 50 Cal Barrels
  2. 00:05M3AC Aircraft Barrel
  3. 00:12M2HB Heavy Barrel
  4. 00:24M2WC Water Cooled Barrel
  5. 00:38M85CA Coaxial Machine Gun

Frequently Asked Questions

What are the main differences between the M3AC and M2HB .50 caliber machine gun barrels?

The M3AC is an aircraft gun with a high cyclic rate (1100-1200 RPM) and air cooling, designed for rapid fire. The M2HB is a heavy barrel for ground mounts, with a lower cyclic rate (450-600 RPM) and typically air-cooled.

Why was the M2WC water-cooled barrel used for .50 caliber machine guns?

The M2WC water-cooled barrel was used in ground and naval applications to enable sustained rates of fire, particularly effective for engaging aircraft targets without overheating.

What is the M85CA and how does it differ from Browning designs?

The M85CA is a General Electric-designed .50 caliber coaxial machine gun, not a Browning design. It was used on M60 tanks and featured a selectable rate of fire (425/600 RPM), but was not as successful as Browning's models.

What is the common caliber for these military machine gun barrels?

All the military machine gun barrels discussed in the video are chambered in .50 BMG (Browning Machine Gun), a powerful and widely used caliber for heavy machine guns.

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