.50 Cal Ejector Head Assembly

This .50 Cal Ejector Head Assembly, identified by FSN 1005-216-6303, Part Number A90EH1, and Stock Number 5200-320590, is a specialized military-surplus ordnance component associated with .50 caliber equipment support. For collectors of U.S. military small-arms parts, ordnance hardware, government-surplus components, and stock-numbered military items, this is a focused reference piece with strong catalog and display value.

Because this item is identified by multiple reference numbers, it is especially useful for collectors, restorers, museums, and surplus-parts buyers who track components by original government-style identifiers. The 1005 prefix places the item within Federal Supply Class 1005, which is classified as Guns, through 30mm.

The .50 Cal Ejector Head Assembly

The Ejector Head Assembly belongs to the broader family of .50 caliber ordnance components, small-arms support parts, and military replacement hardware. Unlike a complete firearm, ammunition item, receiver, barrel, or bolt assembly, this is an individual component intended for collection, reference, restoration support, or display use where lawful and appropriate.

Parts like this represent the detailed maintenance and supply side of military ordnance history. Larger .50 caliber systems depended on many individual assemblies, pins, springs, stops, latches, guides, and other cataloged components to remain properly supported through military supply channels. That makes a part-numbered assembly like this especially interesting to collectors who want more than general surplus hardware.

For collectors, this component has added appeal because it carries multiple identifiers: FSN 1005-216-6303, P/N A90EH1, and Stock Number 5200-320590. Those numbers help distinguish it from generic .50 caliber parts and make it more useful for cataloging, inventory, reference, and display.

Known Catalog Details

Known identifying information for this item includes:

• Item: .50 Cal Ejector Head Assembly
• Federal Stock Number: FSN 1005-216-6303
• Part Number: A90EH1
• Stock Number: 5200-320590
• Federal Supply Class: 1005 – Guns, through 30mm
• Item Type: Military-surplus ordnance component
• Included Item: Ejector Head Assembly only, unless otherwise stated

The FSN format is especially relevant for older military-surplus components. Modern National Stock Numbers are 13-digit identifiers assigned to items that are repeatedly stocked, stored, and issued through the federal supply system, while older stock-numbered items are often encountered in surplus channels with legacy markings or pre-NSN numbering formats.

What This Component Supports

As a .50 Cal Ejector Head Assembly, this item is best understood as a support component for a larger .50 caliber ordnance system. It is not a complete weapon system and should not be represented as one.

In practical collecting and display terms, a component like this is especially relevant for:

• .50 caliber ordnance component collections
• U.S. military small-arms parts reference displays
• government-surplus hardware collections
• stock-numbered military parts collections
• museum exhibits on ordnance maintenance and supply systems
• restoration-support reference where lawful and properly documented
• collectors seeking FSN, P/N, and legacy stock-numbered components

This type of item is especially useful for buyers who are building a focused collection of .50 caliber ordnance-related parts or documenting how individual military components were identified and supplied.

Historical and Technical Interest

Military ordnance collecting often focuses on complete weapons, vehicles, ammunition displays, or manuals, but individual components like this Ejector Head Assembly help preserve a different part of the story. They show how military equipment was supported through detailed supply catalogs, part numbers, stock numbers, and replacement-component systems.

For collectors and historians, this component is especially relevant to subjects such as:

• .50 caliber military ordnance components
• U.S. military small-arms support parts
• FSN-marked or FSN-identified surplus hardware
• part-numbered ordnance replacement components
• military maintenance and supply-system history
• government-surplus machine gun support parts
• stock-numbered U.S. military hardware

Because this is a specific Ejector Head Assembly rather than a generic surplus part, it adds technical depth to collections centered on .50 caliber equipment, U.S. ordnance logistics, and military parts identification.

About This Ejector Head Assembly

This listing is for one .50 Cal Ejector Head Assembly, identified as FSN 1005-216-6303, P/N A90EH1, and Stock Number 5200-320590.

It is especially well suited for:

• .50 caliber ordnance parts collectors
• U.S. military surplus component collections
• small-arms parts reference displays
• ordnance maintenance and supply-system collections
• museum and archival reference use
• collectors of FSN and stock-numbered military hardware
• buyers seeking P/N A90EH1 / FSN 1005-216-6303

This listing is for the Ejector Head Assembly only unless otherwise stated. No complete firearm, receiver, barrel, bolt assembly, ammunition, tools, manuals, mounting hardware, or additional accessories are included unless specifically shown or noted.

Why This Part Matters

Many military collectibles focus on the most visible equipment: complete weapons, uniforms, helmets, vehicles, or large display items. This component represents a different but equally important category: the individual parts that kept military ordnance systems documented, maintained, and supplied.

For collectors, it is a compact and highly specific .50 caliber component with clear identifying numbers. For researchers, it provides a useful reference point for how small ordnance parts were cataloged. For museums and displays, it helps show the behind-the-scenes supply structure that supported larger .50 caliber military systems.

Because this item is identified by FSN 1005-216-6303, P/N A90EH1, and Stock Number 5200-320590, it is a strong fit for anyone building a focused collection of U.S. military ordnance components, .50 caliber support parts, or government-surplus cataloged hardware.

Ideal For

This ejector head assembly is a strong fit for:

• .50 caliber ordnance component collections
• U.S. military surplus parts displays
• stock-numbered military hardware collections
• ordnance maintenance and logistics displays
• museum and archival reference collections
• collectors of FSN-marked or FSN-identified parts
• small-arms historians and military researchers
• buyers seeking A90EH1 / FSN 1005-216-6303 / Stock Number 5200-320590

Approx length 3", Approx width 3", Approx height 1.5", 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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