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Cuttlefish Carbon Fiber Speargun Barrel 56.00 $ – 73.00 $Price range: 56.00 $ through 73.00 $
Round Carbon Fiber Speargun Barrel
56.00 $ – 73.00 $Price range: 56.00 $ through 73.00 $
ANT Composites manufactures round carbon fiber speargun barrels for spearfishing equipment, replacement barrels, and OEM speargun projects.
The barrel uses a continuous round carbon fiber tube as its main structure. Two low raised shoulders run along the top and form a shallow guide track for the spear shaft. This integrated design helps keep the shaft aligned without adding a separate external rail.
Standard and custom diameters, lengths, wall thicknesses, carbon finishes, and guide profiles are available.
| Material | Carbon fiber and epoxy resin |
|---|---|
| Standard inner diameter | 25 mm / 26 mm |
| Standard outer diameter | 28 mm / 30 mm / 31 mm |
| Wall thickness | Custom according to structure |
| Standard lengths | 85 cm, 90 cm, 95 cm, 100 cm, 105 cm, 110 cm, 115 cm, 120 cm, 130 cm, 140 cm |
| Barrel profile | Round |
| Carbon weave | 3K 2×2 twill |
| Surface finish | Matte or glossy |
| Color | Black carbon; custom finish available |
| Customization | Diameter, profile, length, rail and finish |
Description

Key Features
- Continuous round carbon fiber tube
- Integrated full-length shaft guide
- Lightweight with high bending stiffness
- Good straightness and dimensional consistency
- Suitable for saltwater equipment
- Compatible with common handle and muzzle systems
- Glossy or matte 3K carbon fiber finish
- Custom diameter, length and wall thickness
- CNC cutting and end finishing available
- OEM manufacturing for speargun brands
Popular Size Options
| Inner Diameter | Outer Diameter | Typical Use |
| 25 mm | 28 mm | Lightweight barrel systems |
| 25.4 mm | 30.5 mm | Custom handle and muzzle systems |
| 26 mm | 30 mm | Common speargun components |
| 26 mm | 31 mm | Higher-stiffness barrel designs |
Compatibility should be confirmed before production. Small differences in inner diameter, guide height, and connection dimensions can affect assembly.
Available Lengths
Common barrel lengths include:
85 / 90 / 95 / 100 / 105 / 110 / 115 / 120 / 125 / 130 / 140 cm
We can also cut the barrel to a customer-specified length.
For OEM orders, please provide the required finished length for the round carbon fiber speargun barrel and confirm whether additional allowance is needed for machining or assembly.

Have a project in mind? Let's talk.
Frequently Asked Questions
1. What is the most common round speargun barrel size?
A 26 mm inner diameter with an outer diameter of approximately 30–31 mm is commonly used. The correct size depends on the handle and muzzle system.
2. Is the shaft guide integrated into the barrel?
Yes. The guide is formed by two raised shoulders molded into the carbon fiber barrel. It runs along the full length of the tube.
3. Can you customize the guide profile?
Yes. Guide width, height, groove depth, and overall profile can be adjusted according to the shaft and customer drawing.
4. Can you provide matte and glossy surfaces?
Yes. Both matte and glossy 3K twill carbon fiber finishes are available.
5. Do you manufacture single replacement barrels?
Our main service is intended for B2B and OEM orders. Sample quantities may be available for testing before batch production.
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Cuttlefish Carbon Fiber Speargun Barrel
56.00 $ – 73.00 $Price range: 56.00 $ through 73.00 $
Our cuttlefish carbon fiber speargun barrel combines a standard round carbon fiber tube with streamlined side wings. This profile creates the recognizable cuttlefish shape while keeping the front and rear connection areas compatible with the required speargun components.
An integrated rail runs along the top of the barrel to guide the spear shaft. The carbon fiber structure offers low weight, high stiffness and good resistance to the marine environment.
We manufacture barrels according to your required length, cross-section, connection dimensions and surface finish.










