Rob Allen Mahi Carbon Speargun

From: £249.99

Rob Allen Mahi Carbon Speargun

  • 7mm tri-cut springer steel spear
  • Twin 14mm bands

This latest batch comes with a closed muzzle.

Rob Allen Mahi Carbon Speargun

Rob Allen Low Profile Open Muzzle

Open Muzzles are slightly easier to aim down the barrel. Closed muzzles are slightly easier and quicker to load the speargun up.

Rob Allen Coloured Rubber Grips

Wanting to add some flair to your handle?

Rob Allen Trigger Mechanism with Loading Butt

Loading butts push the gun away from you when loading up, meaning you don't have to pull back as far. The downside is that they reduce the surface area and reduce the spread of the force on your chest.

Meandros 7.5cm Reverse Trigger Mech for Rob Allen Spearguns

Make your speargun act 7.5cm longer!
*May need slightly longer bands*

Crabb SpearSling - Red

The perfect strap to carry your speargun in style! Check our the blue version here!

Out of stock

Gun Rigging service- Double Wrapped Mono with muzzle bungee

A double wrap is ideal for guns fitted with twin bands as this will allow you to make the most of the extra range provided by the additional power.

In stock, yours in 1-4 days

SKU: Mahi Category: Tag:

*Any Backorder Rob Allen products will have a wait time of up to 3 months. We will be in contact if there are any unforeseen circumstances that lead to a delay as soon as we find out.*

Rob Allen Mahi Carbon Railgun

The configuration:

  • Black carbon finish with blue logo decals
  • Double 14mm bands
  • Integrated rail for deadly accuracy
  • 7mm tri-cut spring steel spear (much denser than stainless steel)
  • Pull wound carbon barrel
  • Stainless steel trigger mechanism housed inside glass reinforced nylon cassette
  • Single wrapped heavy duty shooting mono – 2mm thick with 400lb breaking strain
  • Muzzle bungee with quick release clip
  • Low profile muzzle closed muzzle
  • This version doesn’t include the loading butt

Chose the double wrap rigging option for half price and we will upgrade the shooting line to a double wrap, making use of the extra range provided by the twin bands. (highly reccomended)

*Contact us if you can’t find the variation you want and we will order in*

The Rob Allen carbon railgun

It really is what legends are made of and all starts with the manufacturing process. Each strand of carbon fibre is pull wound in a continuous flow using a phenomenal 4 tons of pressure. This allows the fibre loading to be maintained at an insanely high level, far over the traditional mandrel wound tubes, which is why Rob Allen’s technology is so popular.

Each barrel is pressure tested twice immediately after it has been made, and in a pressure tank for one hour at a depth of 40 meters.

We have seen a large jump in demand for these configurations over the past couple of years.

The spear is a stainless steel 7mm tri-cut projectile that is perfectly weighted for the twin 14mm bands. The heavy duty mono shooting line has a ridiculous breaking strain of 400lbs, secured via stainless steel crimps and attached via a Rob Allen muzzle bungee.

This gun is very light yet incredibly strong, even up to 1.6 meter lengths. Check out the IUSA world records and you will see heaps have been taken with the Rob Allen carbon. No other manufacturer on earth can say this, which is why you know from the onset that there is no β€˜hype’ involved with this gear.

Make no mistake – Rob Allen is the Chuck Norris of spearguns!

What size speargun do you need? Click me to find out.

Spearfishing coursesΒ – New to spearfishing? Then why not let one of our instructors train you up!

*Please note this does not come with the loading butt as seen in picture


Material (spearguns)

No. of bands

Band Thickness

Band Type



Flopper Style

Barrel length

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Handle Style

Line Release Type


Rubber Manufacturing Style

Spear Steel

Spear Style

Speargun Type

Trigger Mechanism Material

Barrel Type

Trigger Mechanism Style

Rob Allen Mahi Carbon Speargun


Carbon 70 – twin 14mm rubber, Carbon 80 – twin 14mm rubber, Carbon 90 – twin 14mm rubber, Carbon 100 – twin 14mm rubber, Carbon 110 – twin 14mm rubber, Carbon 120 – twin 14mm rubber, Carbon 130 – twin 14mm rubber, Carbon 140 – twin 14mm rubber, Carbon 160 – twin 14mm rubber


Material (spearguns)

No. of bands

Rob Allen Low Profile Open Muzzle


Rob Allen Coloured Rubber Grips



Aqua, Pink, Lime Green, Red, Yellow, White, Grey, Rob Allen Blue

Crabb SpearSling - Red