20mm Vulcan Replica Dummy Shell

Product Description

Authentic-looking 20mm Vulcan replica shells molded from original Vulcan 20mm shells.  They are a solid plastic resin. Each piece features a realistic brass-finish casing and a colored projectile tip to match the original ordnance. Ideal for reenactment, film & stage, cosplay, museum displays, and educational use where genuine ammunition is impractical or prohibited.

Available types

• Black — AP (Armor Piercing)

• Blue — HE (High Explosive)

• Red — HEI (High Explosive Incendiary)

Key features

• Faithful visual reproduction of 20mm Vulcan ammunition

• Durable, solid plastic resin construction — lightweight and long-lasting

• Brass-tone casing finish with accurate colored projectile tips for easy identification

• Safe for display, props, and educational setups (not functional ammunition)

**NOT INTENDED TO BE USED OR PLACED IN ACTUAL GUN OR CANNON AND CANNOT BE MADE FUNCTIONAL.

**Shipping**

• Items are Made to Order:  Please allow 10 -14 business days for shipping
• International Shipping Available
• Secure Checkout & Payment Options
  
• Made in USA by Marshall's Arsenal

Historical Background

The 20-millimeter round refers to a family of cannon ammunition around a 20 mm caliber. Because of its size and kinetic power, 20 mm is typically used in autocannons and aircraft or vehicle-mounted guns to engage materiel targets — aircraft, lightly armored vehicles, radar sites, and fortified positions — rather than individual infantry. While certainly lethal to people, 20 mm projectiles are optimized for defeating equipment and structures where the combination of velocity, explosive effect, and incendiary potential is most effective.

The three most common 20 mm types are:

• AP (Armor-Piercing): designed to penetrate armor with a hardened core.

• HE (High-Explosive): contains an explosive filler that detonates on impact to maximize blast and fragmentation.

• HEI (High-Explosive Incendiary): combines explosive and incendiary effects to both detonate and ignite combustible materials.

These distinctions made 20 mm ammunition a versatile choice for both air-to-air and air-to-ground roles throughout 20th-century conflicts and in many modern autocannon systems.