8"/55cal Mark 21 Armor Piercing Projectile
$3,950.00
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8"/55cal Mark 21 Armor Piercing Projectile
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Massive U.S. Navy 8-Inch Mark 21 AP Projectile – Cold War & WWII Naval Artillery
Own a legendary piece of naval firepower with this inert restored 8"/55 Cal Mark 21 Armor Piercing (AP) Projectile. Standing at an impressive 3 feet tall and weighing over 300 pounds, this massive round was designed to penetrate heavily armored warships, fortifications, and enemy installations. Used aboard U.S. Navy heavy cruisers, this projectile played a crucial role in World War II, the Korean War, and the early Cold War era.
Historical Significance
The 8"/55 caliber Mark 21 AP projectile was fired from the 8"/55 caliber Mark 16 naval gun, mounted on heavy cruisers such as the USS Baltimore (CA-68), USS Des Moines (CA-134), and other U.S. Navy warships. These guns were the largest caliber naval artillery permitted under the Washington Naval Treaty, making them the backbone of U.S. heavy cruiser firepower during the mid-20th century.
Designed for armor penetration the Mark 21 AP projectile was engineered to punch through enemy warships' hulls, heavily fortified coastal defenses, and reinforced bunkers. During World War II and beyond, these shells were used in:
- Naval engagements against enemy ships
- Shore bombardments in support of amphibious assaults
- Anti-fortification strikes during the Korean War and early Cold War conflicts
With high-velocity impact and deep armor penetration capabilities, the Mark 21 AP projectile represented the peak of U.S. Navy cruiser firepower before guided missiles took over.
Key Features:
- Authentic U.S. Navy 8"/55 Cal Mark 21 Armor Piercing Projectile – Restored & Inert for Display
- Massive Size & Weight – 3 Feet Tall, Over 300 Pounds of Naval History
- Designed for U.S. Heavy Cruisers – Used on Baltimore-class & Des Moines-class Warships
- Armor-Piercing Design – Engineered to Penetrate Enemy Warships & Fortifications
- Cold War & WWII Naval Ordnance – An Iconic Piece of U.S. Military Firepower
- Perfect for Collectors, Museums, and Military History Displays
- Museum-Quality Restoration – Expertly Restored for an Impressive Display
Why This Collectible Stands Out
This inert restored 8"/55 Cal Mark 21 AP projectile is an exceptionally rare and historically significant artifact, offering an authentic representation of U.S. Navy heavy cruiser firepower. Whether displayed in a museum, historical exhibit, or private collection, this massive projectile is a true centerpiece of naval warfare history.
Unlike smaller artillery shells, this full-size 8-inch armor-piercing round makes an impressive statement, showcasing naval engineering, firepower, and military innovation from World War II to the Cold War.
Limited Availability – Order Now!
Due to the sheer size, weight, and rarity of these naval projectiles, finding an authentic, inert restored 8"/55 Cal Mark 21 AP round is incredibly difficult. Secure this incredible piece of naval artillery history today before it's gone!
Approx length 37", Approx width 8", Approx height 8", Approx weight 325lbs.
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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