Mares Sten

✔ Authentic Mares spearfishing gear
✔ Powerful, compact pneumatic design
✔ Ready to ship from our dive shop
✔ Questions about setup or sizing? Call 541-450-0309

The Mares Sten Pneumatic Speargun delivers compact power and precision for serious spearfishers. Its air-powered system provides strong, consistent shots while remaining easy to maneuver in tight reef or kelp conditions. A trusted choice for divers who want accuracy, durability, and performance.

The Sten spearfishing speargun is a pneumatic speargun with 13mm barrel . Ergonomic handle and brand new ultra light and compact head, greatly improving buoyancy and hydrodynamics.

Reinforced ogive with steel wire pass and ultra-light compact head, for better buoyancy and hydrodynamics. The 13mm inner barrel allows you to use 7mm and 8mm rods.

The main features of the Sten pneumatic speargun are:

40 mm outer barrel

Lightweight one-piece muzzle

13 mm inner barrel

Reinforced spinner with steel line guide

Ergonomic handle with white grip for greater visibility

8 mm threaded rod

If you’re interested in a traditional band-powered option, check out the 
AB Biller Padauk spear gun
as a classic harpoon-style alternative.

Complete your spearfishing setup with protective wetsuits, comfortable dive fins, and essential spearfishing accessories. Coral Sea Scuba has what you need for your next underwater adventure.

Mares Sten Speargun – FAQs

What type of speargun is the Mares Sten?
The Sten is a pneumatic (air-powered) speargun, which provides smooth, consistent power and a compact design that’s easy to maneuver underwater.

Is a pneumatic speargun better than band-powered?
Pneumatic guns are smaller, quieter, and easier to handle in tight spaces like reefs or kelp. Many divers prefer them for precision and quick reloads.

What size Sten should I choose?
Shorter models are great for reef and close-range hunting, while longer barrels provide more range and power in open water. Contact us if you’d like help picking the right size.

Is this good for beginners?
Yes. The Sten is simple to load, reliable, and easy to control, making it a great choice for both new and experienced spearfishers.

Does it require special maintenance?
Like all spearguns, rinse with fresh water after use and store dry. Occasional lubrication and seal checks keep performance consistent.

Can I get replacement parts or accessories?
Yes — we carry spear tips, line kits, and other Mares accessories. Call us if you need help finding compatible parts.