Rob Allen Tuna Railgun

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  • It would be safe to say that the Rob Allen line of spearguns is a legend in the spearfishing industry with hundreds of records and countless thousands of happy customers coming home after a successful day spearfishing thanks to Rob Allen spearguns. Rob Allen is known worldwide for his meticulous attention to detail and testing of every change made on his guns. He does not change for the sake of it but only to continue to evolve the perfect tool for hunting our waters. Robs methodical approach and gruelling testing in South Africa and around the world has led to a series of developments that are now industry standards. The Rob Allen Tuna Railgun is the Heavy Hitter of the Rob Allen range and includes all the features needed to hunt tough scaled heavy-hitting game fish and oversize reef species. When you need power and penetration this is it. Has the power to land fish well over 100kg with the versatility and agility of a single-handed reef gun.

    Features and Specs:

    • Low profile open muzzle
    • Robust integrated rail barrel
    • Ergonomic pistol grip handle with loading butt and soft-touch overgrip.
    • Sear activated line release
    • Solid anchor point with swivel shark clip
    • 2X Quality RA blue 16mm powerbands with Dyneema bridles
    • HD 400lb monofilament shooting line
    • 7.5mm hardened Spring steel spear with tri-cut tip, HD barb and pin
    • Easy disconnect gun bungee with swivel clip
    • Field friendly no tool maintenance

    Low Profile Muzzle

    The Open Rob Allen muzzle is a perfect example of efficient effective engineering. Taking the muzzle design a step further from the Sparid by opening up the site window Rob Allen has created one of the most loved muzzles on the market, fast and easy to aim. By looking closely at the key requirements for accurate shooting, ease of reloading and ease of maintenance Rob Allen worked to reduce the overall size and weight and minimize the amount of material around the spear to ensure easy target acquisition and reliable consistent aiming. The ability to replace the factory powerbands without any tools has allowed divers to keep diving for longer. With 2 high-quality powerbands for any fish any time, you’ve got the power you need.

    Integrated Rail Alloy Barrel:

    Rob Allen pioneered the use of an integrated aluminium rail barrel into his guns decades ago to help support the shaft and increase barrel strength. This allowed for a lightweight gun with much greater power while still remaining laser-accurate. This barrel design continues on today using the highest aerospace-grade Alloys to create a reliable lightweight and efficient barrel as the backbone of your speargun.

    The Rob Allen Vecta 2 handle and mechanism:

    The Handle and mechanism of your speargun are vital. The wrong shape and angle will result in difficult aiming and inconsistent accuracy due to recall. Rob Allen works endlessly on small minute details on his Vecta series of handles to make them an easy, accurate and reliable system for hunting fish.

    The latest Vecta 2 handle offers:

    Active Stainless Steel line release working off the sear, this illuminates any issues with shooting line tension and shaft load. This result in a more consistent release and trigger pull. Ask any target shooter and repetitive consistency is the key to accuracy. Large rounded spear through to allow a wide range of shafts and shooting lines to be used with minimal wear. 6mm-8mm shafts are no problem. Ergonomic handle with soft-touch over mould designed to direct and reduce recall and muzzle lift and give a comfortable secure and consistent grip with a natural and easy reach to the trigger. It’s all about maximising energy to the spear and accuracy. Solid anchor with swivel shark clip. A solid and reliable attachment point for your float line. When you get the shot on that fish of a lifetime you don’t want to worry about if your gun will come back. Low profile loading butt to make loading your gun a cinch in even the roughest conditions.

    2x 16mm RA Blue Powerband:

    What better than one great band on your gun? 2! Simple when one band just doesn’t cut it we add a 2nd to make sure. The engine for your speargun. The key to a consistent and powerful speargun is the powerband. Rob Allen has spent countless hours working on the band lengths and latex composition of his signature Blue over Amber powerbands to ensure minimal energy drop over time and consistent band stretch and energy levels. This combines to give you a reliable power output and aiming point. Combined with lightweight and streamlined Dyneema bridles these bands are magic. By tuning the band length to the sweet spot for the rubber rob can perfect the band and power for each length speargun.

    Rob Allen 7.5mm Spring Steel Spear:

    It’s no secret Rob Allen makes the straightest toughest spears around. The spear design is classic Rob Allen and has again become a reference point for spears the world over, many times copied but never bettered. The 7.5mm diameter stiffens the spear and gives more mass, this allows us to increase the power load and increase penetration. Every Rob Allen shaft is straightened and tested by hand to ensure the straightest most accurate spear you’ll ever use. HD spring stainless steel pin and thick heavy-duty stainless steel barb resists sheering even on the biggest fish and are all tuned to engage and lock on the penetration of the fish. It’s the small things that matter, the slightest bend or out of line spear or barb has a huge impact on accuracy.

    Features and Specs:

    • Heat-treated Spring Steel Hardened to 2100mpa resisting bending and breaking.
    • Machine ground tri-cut tip for busting through scale and bone
    • Heavy-duty zinc electroplated outer coating to resist corrosion and glare
    • 2 loading notches that are smooth and rounded to fit Dyneema bridle perfectly
    • Drilled and smoothed shooting line anchor point

    HDPE gun bungee with swivel clip and 400lb reinforced monofilament rigging:

    The gun bungee and swivel clip keep the shooting line at the perfect tension and allow for some give in the system during the shot and fight. The swivel clip helps when removing fish from the spear and allows for a fast changeover in the event of a damaged or jammed spear. HD 400lb mono has excellent abrasion resistance and will handle a huge amount of abuse over rocks and coral.

    Tool Free Maintenance and Service:

    The coastlines of South Africa and Australia are remote harsh environments, and lock all tools equipment should be cleaned and maintained. Rob Allen spends more time than most in the middle of nowhere hunting elusive species with very limited equipment. Rob Allen's focus from the beginning was to be able to clean and replace spears, powerbands and shooting lines with minimal tools. As a result, a simple wash down in freshwater, band, spear and shooting line replaced by hand when necessary is all that’s needed. Simply take a couple of spare rigged spears and some pre-made looped powerbands and you are good for your next week-long spearfishing adventure.

  • Shipping Information

    Product pages will state whether the item is a standard item by having 'Standard Item' or 'Free Shipping' displayed below the add to cart button, a bulky item by displaying 'Bulky Item', or an in-store only item by displaying 'In-store Only Item, contact us for help'.

    Shipping Costs


    Standard Shipping

    Express Shipping

    Orders over $60 total

    FREE for standard items only

    $6 for standard items only

    Orders under $60 total

    $9.99 for standard items only

    $13.99 for standard items only

    Orders containing bulky items

    $19.99 flat rate

    Custom shipping cost required

    Orders containing oversized items

    Custom shipping cost required. Select one of the ‘In-store pickup’ shipping options at checkout and place the order, then we will contact you for a shipping cost shortly after. The minimum cost is $19.99 and sometimes that’s all it will cost you, other times it can be more expensive so we need to work out a happy medium. If the calculated shipping cost is too high and you’re not happy with it, we can fully refund your order instantly.

    Custom shipping cost required

    Orders containing in-store only items

    Contact Us if you're having trouble

    Contact Us if you're having trouble

    Store Pick Up



    NOTE: Sometimes we have to split your order and send multiple parcels, if this happens we will let you know and send through a tracking number for each parcel. When multiple parcels are sent we cannot guarantee that they will arrive at the same time.

    For all shipping details, click here.

    Handling Times

    Orders placed before 9:30am that contain standard items only will be sent the same day if all items are in stock.

    Orders containing bulky or oversized items are sent with a courier and picked up from our store one business day after we process them.

    For orders with missing items, we may be able to transfer them from our second store location which can take between 1-3 days. If this happens with your order, we will contact you asap to let you know of the delay.

    We do not send items on weekends or public holidays, an exception being the weeks leading up to Christmas. Thus, items ordered on Friday after 9:30am will be sent Monday.

    Delivery Times

    Standard shipping - 1-6 business days

    Express shipping - 1-4 business days

    Bulky/oversized item standard shipping - 2-10 business days

    NOTE: Delivery times may vary depending on your location, availability of items in your order, or during peak order periods.


    Available up to 3 days after receiving your order provided that all products are unused and they're still in their original condition and packaging.

    For change-of-mind returns:

    • All return costs are paid by the buyer
    • Original shipping costs are non-refundable

    See the full returns and refunds policy here.

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