This 20mm M39 Series Guide Track Front Left is an original military component for the M39-series 20mm revolver cannon. Identified here by P/N 8415453 with alternate number 8401520 and FSN 1005-300-5355, it belongs to the feed assy group of the M39 family. Parts in this section of the gun help control the movement and alignment of linked ammunition and associated feed-path components during operation. The M39 itself was one of the principal U.S. aircraft cannons of the Cold War era, a 20×102mm single-barrel revolver cannon used in aircraft such as the F-86, F-100, F-101, B-57, and later the F-5.

For restorers and collectors, components like this are important because the M39 family used a compact, specialized feed system rather than a simple straight-through arrangement. That means guide tracks, chute guides, link guides, and related feed parts are specific to the gun family.

This part is especially useful for anyone restoring an original M39-series cannon, assembling a technical reference collection of U.S. aircraft cannon internals, or preserving rare feed-system hardware for future projects. Small guide and chute components were often separated from complete guns, mixed into bins, or discarded once the larger assemblies were removed, which is exactly why correctly identified originals like this are desirable now. Because this item is identified by both part numbers and an FSN, it also has strong value for documentation, cataloging, and matching to related M39 feed components.

Product Specifications:
Condition: Original surplus part
Part Number: 8415453
Alternate Part Number: 8401520
FSN: 1005-300-5355
Compatibility: 20mm M39-series revolver cannon
Application: Front guide-track / feed-system hardware component

Historical Significance:
The M39 family was one of the first successful American revolver-cannon systems and remained a standard U.S. aircraft gun for decades. Its compact design depended on correctly fitted feed, chute, and guide hardware to manage linked 20mm ammunition at high cyclic rates. Original guide-track components like this help document how the M39 feed system was assembled and are relevant to the accurate restoration of Cold War aircraft armament systems.

Ideal For:
Restoration projects involving M39-series revolver cannons
Aviation museums and static display restoration
Spare-parts inventories for Cold War-era aircraft armament systems
Collectors of U.S. military aviation ordnance
Technical reference collections and educational displays

Approx length 2", Approx width 2.5", Approx height .2", Approx weight .3lbs.

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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