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About Mares Sten Pneumatic Spear Guns

Sten - a legendary name a spear gun that is known and appreciated by all spear fishing enthusiasts for its characteristics of precision, power and reliability. The Sten is one of the finest pneumatic spear guns on the market, optimized for superior performance in a wide variety of spear fishing conditions. Equipped with a rigid ergonomic grip and hydrodynamic muzzle, when used with 8mm diameter shafts, it will meet the needs of fishermen looking for great power and reliability.

Spear Gun is equipped with a patented side line release and safety catch. When the fish is fighting your grip the Durable Harmonic Stainless Steel 8 mm Shaft won't bend or break and the Techno-Polymer shock-absorber bushing and piston will absorb the fight of the biggest fish.

Speed and penetration is assured with the Sten's high capacity air tank. The 1/2" (13mm) internal barrel can use either a 7mm or 8mm shaft. The simple but sturdy design and construction makes the spear gun highly reliable. Special innovative technical solutions give these spear guns an accuracy that further exceeds all other products on the market. Sten comes with a double barbed tip, shock line with rubber shock bungee, spear shaft, shaft loader and recharging pump. The 16.5" (42cm) spear gun also comes with a leg holster. All Sten Spear Guns come with a 24 month limited warranty.

The Mares Sten Pneumatic Spear Guns is commonly used for Close To Shore, Cold Water, Large Prey, Open Water, Small Prey, Warm Water and more. The Mares Sten Pneumatic Spear Guns is most used by customers who consider themselves to be a Advanced Diver, Recreational Diver among others. The Mares Sten Pneumatic Spear Guns is popular because customers like the following qualities of the Mares Sten Pneumatic Spear Guns: Accurate, Durable, Fast, Good Range, Lightweight, Low Recoil.

Warranty Information

This product has a limited warranty of 24 months.

Mares Sten Pneumatic Spear Guns Features

  • Rigid Ergonomic Handle
  • Patented Side Line Release
  • Patented Safety Catch
  • Harmonic Steel Shaft (8mm Diameter / 7mm Male Thread)
  • Hydrodynamic Line Retainer
  • Techno-Polymer Shock-Absorber Bushing and Piston
  • High Capacity Air Tank
  • Uses 7 or 8 mm Shafts
  • 1/2" (13 mm) Internal Barrel
  • Complete with Loader, Pump, Shock Line with Rubber Shock Bungee, Tip and Shaft
  • Five Models to Choose
  • 16.5"(42 cm) Guns Includes Leg Holster
  • 2 Year Limited Warranty

Mares Sten Pneumatic Spear Guns Customer Reviews Powered by TurnTo®

Review Summary


(based on 24 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Most Liked Positive Review


Powerfull and reliable. Incredible gun.

Incredible speargun. This is my second one and I don't need any other. It look like a small toy but with a great power, accurate and good range. Very easy to handle and operate. I've hunted good sizes pieces. All my friends envy me.


Most Liked Negative Review


not the best deal out there

Can get the prizm for cheaper for a all aluminium construction, with more extras

Reviewed by 24 customers

Displaying reviews 1-5

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A good speargun with a junk spear.


from Felton, DE, US

I bought the Sten Long 85cm version. The gun is good but the stock spear shaft and spear tip are worthless. The spear shaft will rust the first time it hits salt water. Also the spear tip that is included has no retainer ring to help with removing spear from a fish. I guess you are expected to only shoot one fish per dive... So, just plan on buying a stainless steel shaft and a good spear tip. I also replaced the string with a good 12 foot auto coil. And the new cocking device is also junk. But otherwise it's a good gun.


Decent Gun


This is a nice speargun for the money. It is easy to load on low power setting and is quite accurate. The monofilament shooting line that comes with it is a bit short, however. Plus, you need to make sure to double check the factory installed crimps/ferrules on the supplied shooting line. I learned the hard way by missing a shot on high power setting and the shaft reach the end of the shooting line and simply stripped the mono out of the ferrule...bye bye spear. I use this in lakes in Arkansas, so once you drop something, it is gone. But the 58 has decent power, even in low setting. I can put a shaft straight through the head of a 4 lbs smallmouth bass at 6-8 feet range on low power...not bad. The storage for the loader in the handle is lacking. The tabs that hold the loader in fatigue and break off after just a few dive trips. I ended up getting a bracelet to hold my loader. Overall, great gun. I would recommend this to my friends.


Mares Sten performs like a champ


I use this speargun in the Lost Coast Region of NorCal. The water is cold and can be rough. There are a lot of cave/rock outcroppings in the areas that I frequent. This gun is a little longer than my Omer, but still gets in the tight spots where I like to hunt. I replaced the stock lanyard on it with a coiled JBL type because it does not behave well in cold water. I am hoping it lasts as long as my Omer did (10 years). If you put the full amount of air in it when new, it is rather difficult to load at the surface for free diving but loads quickly and easily at 40 ft.The only reason it doesn't get a 5 star rating is because I had to get rid of the sub optimal lanyard.


Mares Sten MiniMini


I have used this wee gun about 4 times now, I was quite impressed with its power for its size. On the first trial run I bent the stainless steel spear (which I had bought as an extra) while trying to load it, I must have accidentally moved the safety onto the "on" position, and for this reason the spear just bend when I pushed down on in. Like other reviews have mentioned, the instruction manual that comes with the gun are not very clear but with a little patience you can figure it out. The other thing which lets this gun down is the holster, it does not stay in place. I have resorted to ditching the holster and keeping the gun in my catch bag. The size of the gun makes it really handy, you can have it in your catch bag and hardly notice it. Good for when gathering shell fish and see a yummy fish lingering around.


Mares Sten


I fish Northern CA to Carmel. I love this gun. While the tip is completely use that comes with it, purchase a new one Stainless and your in business. This gun is deadly accurate. Have taken Hundreds of Rock Cod, Greenling, Ling Cod, Cabezon at close range to 10 feet. The 70cm gives you a little more range. Love it

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Questions & Answers Powered by TurnTo®

Questions about this item:

Shopper  Why Did You Choose This?
JERRY B  Versatile, but plastic holster not good and lost the gun kicking in current.
Jody A  How do they measure the gun length is overall length from tip to tip or is it from a certain place on the gun ?
Mike S  I cannot advise about STEN but for MARES CYRANO gun length is the overall length from tip to tip
DEREK B  I think from muzzle to handle. A 90cm is about 3' without the spear
Shopper  what accessories it has ?
Frank L  Comes with tip, shaft, shock line, loader and pump.
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