Meaning
What does MOC mean?
MOC means “My Own Creation”. In the brick-building world, a MOC is a custom model designed by a builder rather than a standard official set.
A LEGO® MOC usually starts with an idea: a building, vehicle, machine, scene, character, display piece or anything else the designer wants to create. The builder then works out the structure, parts and instructions so other people can recreate the model.
That is the main reason MOCs are so popular. They let builders go beyond the official catalog and build something more specific, more personal or more technically interesting.
How they differ
MOCs are not the same as official sets.
Official sets are designed and released by LEGO®. A MOC is different: it is designed by a fan builder or independent designer, usually for people who want a very specific model, a more advanced build or a display piece that does not exist as an official product.
Some MOCs are small and playful. Others are large, technical and complex. Many include original building techniques that you would not normally find in a standard set.
Categories
Popular MOC categories
Architecture MOCs
Buildings, landmarks, interiors and display models with clean lines and strong visual detail.
Technic MOCs
Mechanical builds with gears, axles, rods and movement. Ideal for builders who enjoy engineering.
Automaton MOCs
Creative scenes with moving parts. They often combine display value with clever mechanisms.
Modular building MOCs
Street scenes, houses and modular-style buildings for city layouts and display shelves.
Vehicle MOCs
Cars, trucks, ships, aircraft and sci-fi vehicles, from simple builds to complex display models.
GBC and mechanism MOCs
Great Ball Contraption modules, kinetic displays and builds where the movement is the main point.
How BuildaMOC helps
We handle the sourcing so you can enjoy the build.
Finding all the parts for a MOC can take time. You may have to search across different stores, check part availability, compare colors and make sure the order matches the instructions.
BuildaMOC turns that process into a ready-to-build kit. You choose the model, we prepare the parts and instructions, and your kit arrives packed for the build.
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Choose your MOC
Pick a model from our catalog or tell us about a specific custom project.
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We prepare the kit
Our team gathers the parts, prepares the instructions and checks the package.
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You start building
Everything arrives together, ready for you to open, sort and build.
For companies
Custom MOCs can also become branded business kits.
Alongside ready-to-build MOC kits for individual builders, we create custom branded brick kits for corporate gifts, trade shows, product launches, employee campaigns and client events.
FAQs
Common questions about MOCs
What does MOC mean?
MOC means My Own Creation. It is a custom brick-built model designed by a builder rather than a standard official set.
Are MOCs official LEGO® sets?
No. MOCs are independent custom designs. They can use genuine LEGO® elements, but they are not official LEGO® sets.
Do BuildaMOC kits include the parts?
Yes. Our ready-to-build kits include the parts needed for the model, along with instructions in the format specified for the kit.
Can a company create its own custom MOC kit?
Yes. We can create custom branded brick kits for business gifts, events, campaigns and launches. Share your idea, target quantity and deadline, and we will help you plan the project.
This is not a LEGO® product. LEGO® is a trademark of the LEGO Group, which does not sponsor, authorize or endorse this site.