Water-Cooled .50s: The US Navy Mk22 Pedestal Mount

Published on October 27, 2022
Duration: 10:53

This guide details the operation and features of the US Navy Mk22 Pedestal Mount, a twin water-cooled .50 caliber machine gun system. It covers recoil management, firing techniques, ammunition feeding, and the specialized sighting system, emphasizing its use on naval vessels and fixed land placements. The information is presented with high authority by Ian McCollum, drawing on his detailed knowledge of WWII naval ordnance.

Quick Summary

The US Navy Mk22 Pedestal Mount is a twin water-cooled .50 caliber machine gun system featuring 360-degree rotation and advanced recoil management via spring-loaded mounts. It uses 200-round 'tombstone' drums with internal spools to prevent feeding issues and is protected by 3/8-inch hardened steel armor.

Chapters

  1. 00:00Introduction and History
  2. 02:04Gun Mechanisms and Recoil
  3. 03:02Mount Movement and Ergonomics
  4. 04:34Ammunition Feeding System
  5. 06:32Armor and Ejection
  6. 08:03Sighting System

Frequently Asked Questions

What is the US Navy Mk22 Pedestal Mount?

The Mk22 Pedestal Mount is a twin water-cooled .50 caliber machine gun mount manufactured by Heintz Manufacturing Company. It was designed for naval vessels and fixed land placements, featuring 360-degree rotation and specialized recoil management systems.

How does the Mk22 Pedestal Mount manage recoil?

The mount uses spring-loaded reciprocating mounts to absorb and manage the recoil from firing two .50 BMG Browning machine guns. This system, combined with the gunner's harness, allows for stable operation.

What type of ammunition does the Mk22 Pedestal Mount use?

It utilizes 200-round 'tombstone' ammunition drums. These drums have an internal spool designed to hold 80-90 rounds, reducing the weight strain on the feed belt and preventing malfunctions.

What are the sighting capabilities of the Mk22 Pedestal Mount?

The mount is equipped with anti-aircraft 'spider' sights, calibrated for aircraft velocity and direction to aid in calculating target lead. The rear sight includes tinted lenses for shooting towards the sun.

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