The US Navy Mk22 Pedestal Mount is a twin water-cooled .50 caliber machine gun system designed by Heintz Manufacturing. It features a unique 200-round 'tombstone' drum with an internal spool to reduce belt drag, improving reliability. The mount offers 360-degree rotation and -10 to +80 degrees of elevation, with a specialized harness for the gunner. Its 3/8-inch armor protects against .50 caliber fire, and it utilizes anti-aircraft spider sights.
The Lahti L33/39 was a Finnish recoil-operated light machine gun developed for antiaircraft use, evolving from earlier models like the L33 and L34. It featured a unique 75-round drum magazine, specialized spiderweb sights for targeting aircraft, and a robust construction by VKT. Despite limited production, it saw service into the late 20th century.
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