1. What Is an Invert Roller System?

An invert roller system features rubbers that are routed backward through the barrel and pulled forward using pulleys. This setup allows for more power, less recoil, and greater shooting efficiency — without increasing the gun’s length.

• Best for: Custom builds and experienced spearos
• Core components: Pulley system, shaft guides, muzzle, trigger

2. Key Components of an Invert Setup

To build or convert to an invert roller speargun, you'll need:

• Invert muzzle: A specially designed head to support internal the main rope of rubbers
• Trigger mechanism: A durable, precise release system
• Rollers & pulleys: Bearings or wheels to guide the bands smoothly
• Shaft guides: For alignment and shooting accuracy

3. Advantages of Invert Systems

• Increased power: More energy with less effort
• Stable shots: Virtually no recoil
• Improved accuracy: Clean, precise shots with the right shaft guide and trigger
• Silent operation: Perfect for stealth fishing

4. Tips for Choosing and Using Invert Parts

Choosing the right parts is essential for optimal performance:

• Select a muzzle that fits your speargun's length
• Use stainless steel or ceramic bearings for saltwater durability
• Measure and match rubber lengths carefully
• Rebalance buoyancy after converting your gun