WWII German Karl Mörser Railway Mortar Building Block Set | General Jim’s Toys & Bricks | GJ-KARL

WWII German Karl Mörser Railway Mortar – 4158-Piece Building Set

Unleash the Might of History’s Largest Self-Propelled Mortar

Step back into the intense battlegrounds of World War II with General Jim’s German Karl Mörser Railway Mortar Building Set — a stunning 4158-piece tribute to one of the most formidable artillery weapons ever constructed. Developed by Germany in the early 1940s, the Karl-Gerät was a super-heavy siege mortar designed to demolish enemy fortifications with devastating 600mm shells. Only seven were built, each with immense firepower capable of leveling bunkers, bridges, and city blocks.

These mortars saw combat in some of the most pivotal engagements of the war, including the Siege of Sevastopol, the Warsaw Uprising, and operations on the Eastern Front. Deployed via custom-built railway cars or crawler-chassis, the Karl Mörser represented the peak of WWII artillery engineering and battlefield intimidation.

Key Features:

• Historically accurate design based on the real Karl-Gerät tracked railway mortar
• Detachable mortar section for simulated battlefield deployment
• Includes front and rear tractors, a crawler vehicle chassis, railway cars, and track segments
• Interior details: rotating cannon barrel, built-in cannonball loader, engine block, crew compartments, and functional toolbox
• Push-to-load shells, spinning loading mechanism, opening panels, and auxiliary support wheels
• Measures over 30 inches in length when fully assembled
• Designed for advanced builders and historical model collectors
• Compatible with all major brick building brands

A Legacy of Firepower
The Karl-Gerät wasn’t just a weapon—it was a symbol of raw mechanical power. Transported via rail, then transferred to tracked movement for final positioning, it embodied Germany’s heavy artillery strategy. Each massive shell weighed nearly two tons and could be launched up to 10 kilometers, leaving craters and chaos in its wake.

Perfect For:

• Military history buffs and WWII model enthusiasts
• Diorama creators and collectors seeking centerpiece artillery
• Builders looking for a high-difficulty, high-reward project
• Product comes unassembled with detailed building instructions.
• General Jim’s building blocks are compatible with all major brick building brands.

💥No Builder Left Behind Guarantee
Need a replacement piece or support? Our team is ready to assist via our online parts replacement for a quick resolution or hassle-free return—making sure you’re always mission-ready.