

Pieces
Difficulty
Hours
Karl Gerat Siege Gun
Elevating Mortar Barrel
Includes Ammunition Carrier
Premium Collector's Box
Pieces
Difficulty
Hours
Description
The siege weapon that reduced fortresses to rubble. In bricks.
The Karl Gerät — a 600mm mortar firing 2-tonne shells. It destroyed Brest-Litovsk. Nothing stood before it. 4,706 pieces of supreme destructive engineering.
- 1:28 scale complete with ammunition carrier
- Massive 600mm mortar barrel with elevation
- Detailed tracked chassis
- Working loading crane in brick form
- Sorted in numbered bags
Premium manual with historical build notes. Build the most powerful artillery ever built.
What's Included
Shipping & Returns
United States Shipping Information
- United States Shipping Express (3-7 days)
International Shipping
- UK Shipping Express (3-7 days)
- Canada Shipping Express (3-7 days)
- Australia Shipping Express (5-9 days)
- Europe Shipping Express (3-9 days)
- India Shipping Express (5-9 days)
- Rest of the World Express (7-14 days)
Fast Dispatch & Secure Delivery
Every order is dispatched within 48 hours, and we provide insured and fully tracked shipping. As soon as your order is on its way, you'll receive an email with your tracking information so you can follow your package every step of the way.
Returns Policy
We stand by the quality of our sets and want you to love your 12GO model. If for any reason you're not completely satisfied, we offer a 90-day money-back guarantee.
Damaged or Missing Pieces
Missing a brick? Send us a photo and your order number and we'll ship the replacement free of charge.

Karl Gerat Siege Gun
Built to level fortresses
A build worth keeping
Hundreds of hours of engineering in one box. Built to challenge you, detailed to display, made to last on the shelf long after the last brick clicks in.
Karl Gerat Siege Gun specifications
Brick Quality & Compatibility
Every 12GO set is made from high-grade ABS plastic with precision-moulded studs and a consistent clutch power that holds tight build after build. Fully compatible with all major building block brands, so your model sits alongside the rest of your collection without a single loose brick.
Will it fit your shelf?
Assembled size: 55×20×22 (21.7×7.9×8.7")
Included in the Box
Numbered Part Bags
Display Stand
Collector's Box
Instruction Manual







