1. Safety Guidelines
Please read and understand all safety information before assembling or operating this model kit. This product is designed for recreational use and should be handled responsibly.
- Age Recommendation: This model kit is recommended for individuals aged 12 years and older. Adult supervision is advised for younger users.
- Projectile Safety: The model shoots plastic projectiles. Do not aim at eyes, face, or animals. Use only the projectiles provided with the kit.
- Small Parts Warning: This kit contains small parts which may pose a choking hazard for young children. Keep out of reach of children under 3 years.
- Assembly Caution: Follow the instructions carefully. Do not force pieces together, as this may cause damage.
- Responsible Play: Always use the model in a safe and open environment, away from fragile objects or other people.
2. Product Overview
The Caliber Gourmet CBG-BB-4 Automatic Handgun Mechanical Model Kit is a detailed building block set designed for assembly. Once constructed, the model features a functional bolt-action handle and a trigger mechanism capable of firing plastic projectiles.
2.1. Package Contents
The package includes all necessary components for assembly:
- 528 Building Blocks (various shapes and sizes)
- 5 Plastic Projectile Blocks
- Step-by-step Instruction Manual
- Spare parts (approximately 10-20 pieces)
- Rubber bands and metal spring for functional mechanisms

Figure 2.1: Contents of the Caliber Gourmet CBG-BB-4 kit, showing individually bagged building blocks, rubber bands, a metal spring, and the instruction manual.
2.2. Product Specifications
| Feature | Specification |
|---|---|
| Model Number | CBG-BB-4 |
| Number of Pieces | 528 |
| Recommended Age | 12+ Years |
| Approximate Dimensions (Assembled) | 10 inches (Length) x 6.5 inches (Height) |
| Weight | 1.59 pounds |
| Projectile Type | Plastic Blocks |

Figure 2.2: Key dimensions and components of the assembled model.
3. Assembly Instructions
The Caliber Gourmet CBG-BB-4 model kit includes a detailed step-by-step instruction manual. It is crucial to follow these instructions carefully to ensure correct assembly and proper functionality of the model.
- Organize Pieces: Before starting, sort the building blocks by type or color as indicated in the manual. The pieces are often packaged in numbered bags corresponding to assembly stages.
- Follow Steps Sequentially: Each step in the manual builds upon the previous one. Do not skip steps.
- Verify Connections: Ensure all blocks are firmly connected. Loose connections can affect the model's stability and functionality.
- Functional Components: Pay close attention to the assembly of the bolt-action handle, trigger, and projectile firing mechanism, as these require precise placement of rubber bands and springs.

Figure 3.1: Assembling the model kit following the provided instructions.
Video 3.1: An overview of the Caliber Gourmet Automatic Handgun Mechanical Model Kit, demonstrating the unboxing, assembly process, and functional features. This video provides a visual guide to the construction and operation of the model.
4. Operating Instructions
Once fully assembled, the Caliber Gourmet CBG-BB-4 model can fire plastic projectiles. Follow these steps for safe and proper operation.
4.1. Loading Plastic Projectiles
- Rotate the Button: Locate the loading button on the side of the model and rotate it as indicated.
- Rotate the Cover Plate: Rotate the cover plate to expose the internal mechanism.
- Pull Down the Spring Board: Gently pull down the spring board inside the loading area.
- Pull Down the Rubber Band: Ensure the rubber band mechanism is pulled back and ready.
- Insert the Projectile: Carefully insert one of the plastic projectile blocks into the designated slot.
- Close and Prepare: Close the cover plate and ensure all components are securely in place. The model is now charged and ready to fire.

Figure 4.1: Step-by-step guide for loading plastic projectiles.
4.2. Firing Mechanism
To fire a projectile:
- Ensure the model is loaded with a plastic projectile as described in Section 4.1.
- Point the model in a safe direction, away from people, animals, or fragile objects.
- Gently pull the trigger to release the projectile.
- The bolt-action handle can be operated for realistic simulation, though the firing mechanism is trigger-activated.

Figure 4.2: Operating the assembled model.
5. Maintenance and Care
Proper care will ensure the longevity and continued functionality of your Caliber Gourmet CBG-BB-4 model kit.
- Cleaning: Wipe the model with a dry, soft cloth to remove dust. Avoid using harsh chemicals or abrasive cleaners.
- Storage: Store the assembled model or disassembled pieces in a cool, dry place away from direct sunlight and extreme temperatures.
- Component Integrity: Periodically check for any loose or damaged pieces. Replace any broken components with spare parts if available, or contact customer support for assistance.
- Rubber Bands: The rubber bands are crucial for the firing mechanism. If they lose elasticity or break, replace them with similar-sized rubber bands.
6. Troubleshooting
If you encounter issues with your model kit, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pieces do not fit together | Incorrect piece selection or misalignment. | Double-check the instruction manual for the correct pieces and orientation. Do not force pieces. |
| Projectile does not fire or fires weakly | Incorrect loading, worn-out rubber band, or obstruction in the firing mechanism. | Review Section 4.1 for proper loading. Inspect the rubber band for damage or loss of elasticity and replace if necessary. Ensure no blocks are obstructing the projectile path. |
| Model feels unstable or falls apart | Loose connections between blocks. | Go back through the assembly steps and ensure all blocks are firmly pressed together. |
7. Warranty and Support
Caliber Gourmet is committed to providing quality products. For any issues not covered in this manual, or for inquiries regarding replacement parts, please contact our customer support.
7.1. Contact Information
For further assistance, please visit the official Caliber Gourmet store or contact customer service through the retailer where the product was purchased.
Online Store: Caliber Gourmet Store on Amazon