This category lists Rob Allen spearguns with aluminium barrels, from the 50 cm Scorpia and Cobia reef guns to the Tuna Railgun, Caranx 1200, Trevally and BlueFin triple-band railguns. Aluminium rollerguns include the Tuna Roller, Snapper Rollergun and BlueFin Double Rollergun.
Select options
This product has multiple variants. The options may be chosen on the product page
Rob Allen specifies aviation- or aircraft-grade aluminium, with hard anodising on models such as the Trevally and Sparid.
Why choose an aluminium Rob Allen speargun
Durability and value
An aluminium barrel shrugs off the bumps of shore diving, rocky entries and boat decks. The Scorpia and Cobia use a 1 mm wall of aviation-grade aluminium with a glass-reinforced nylon mechanism, a light and simple setup for reef work. Larger guns such as the Trevally Triple Band use an aircraft-grade hard-anodised barrel to carry three 14 mm bands.
Picking a model by target
For small reef fish and tight spaces, look at the single-band Scorpia (50–80 cm, 6.3 mm shaft), Cobia (50–90 cm, 6.6 mm) and Sparid (50 cm to 1.4 m, 6.6 mm). For general coastal hunting, the twin-band Snapper Railgun and Tuna Railgun step up to 7–7.5 mm shafts. For bigger fish, the triple-band Trevally and BlueFin railguns or the BlueFin Double Rollergun add power. Compare the stiffer, lighter carbon spearguns if weight matters most.
Repairs and spare barrels
A bent or damaged barrel does not have to end a gun's life. The Rob Allen Aluminium Rail Barrel is sold separately in lengths from 50 to 150 cm, with a 1.45 mm wall, in Speargun Spares.
FAQ
Does aluminium corrode in salt water? Anodised aluminium handles salt water well, but rinse the gun in fresh water after every dive and dry it before storage.
Are aluminium guns heavier than carbon? Usually slightly, which some divers like for stability. Carbon is the lighter option.
Which aluminium gun is a good first speargun? A single-band railgun such as the Cobia or Sparid is simple to load and maintain. See all conventional guns for more.
