20mm M39 Cam Switch Right Hand
$325.00
In stock
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20mm M39 Cam Switch Right Hand
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Original U.S. Air Force Surplus Component – For M39 Aircraft Revolver Cannon
This new old stock 20mm M39 Cam Switch (Right Hand) is a genuine U.S. military surplus part originally manufactured for the M39 revolver cannon. It is cataloged under Part Number 8412492, FSN 1005-099-8239, and NSN 1005-00-099-8239. The component is in unissued condition and was designed as part of the cannon's internal mechanical control system.
This cam switch played a key role in synchronizing the firing sequence and bolt operation of the M39 20mm automatic cannon, ensuring consistent cycling and proper functioning at high rates of fire.
Historical Background
The M39 20mm revolver cannon was a cornerstone of American jet fighter armament during the early Cold War. Adapted from the German Mauser MK 213 design, the M39 was engineered for rapid, reliable fire and used extensively in the F-86 Sabre, F-100 Super Sabre, and F-5 Freedom Fighter, among others. With a blistering rate of fire around 1,500 rounds per minute, mechanical synchronization was essential.
The right-hand cam switch like this one controlled timing and rotational indexing within the cannon's revolver mechanism, helping cycle the bolt, fire the round, and eject the spent cartridge—all within milliseconds. As a precision component, it was critical to the weapon's sustained accuracy and reliability in high-speed engagements.
Product Features
- Item: M39 Cam Switch – Right Hand
- Condition: New Old Stock (NOS) – unissued U.S. military surplus
- Weapon System: M39 20mm Revolver Cannon
- Part Number: 8412492
- FSN: 1005-099-8239
- NSN: 1005-00-099-8239
- Function: Cam-based synchronization and timing component
- Installation Side: Right Hand configuration
Ideal For:
- M39 20mm aircraft cannon restoration
- Cold War-era aviation restoration projects
- U.S. Air Force armament system displays
- Aviation museums and private collections
- Aircraft weapons collectors are seeking hard-to-find internal components
This is an increasingly rare opportunity to secure a critical internal component from one of the U.S. Air Force's most widely deployed post-WWII aircraft cannons. Whether for restoration or display, this right-hand cam switch embodies Cold War aerospace ordnance engineering.
Approx length 10", Approx width 3", Approx height .5", Approx weight 1lbs.
Pictures are stock images of our inventory. Unless otherwise noted, you will not be receiving the exact item shown in the pictures. The pictures are representative of the item's general condition. The item you receive might be slightly better, or worse, condition than was shown in the pictures.
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