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Rob Allen
Rob Allen Tuna Railgun 1m
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Best Spearguns · head-to-head
Rob Allen Tuna Railgun 1m vs HammerHead Evolution² 55cm
A sourced, side-by-side comparison. HammerHead Evolution² 55cm is cheaper at $328.99. Every spec and price links to its source.
HammerHead
HammerHead Evolution² 55cm
$328.99
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Rob Allen Tuna Railgun 1m | HammerHead Evolution² 55cm |
|---|---|---|
| US price | — | $328.99 |
| Brand | Rob Allen | HammerHead |
| Released | — | — |
| Barrel length | 100 cm (39.4 in) | 55 cm (21.7 in) |
| Power type | band | band |
| Bands | 2x 16mm | 2x Power Helix bands with Dyneema-coated nylon wishbones/bridles (diameter not published) |
| Shaft diameter (mm) | 7.5 | — |
| Barrel material | aluminum (aircraft-grade, hard anodized) | aluminum (aircraft-grade anodized, integrated shaft guide) |
| Effective range (ft) | — | — |
| Reel ready | Yes | — |
| Buoyancy | — | ballasted for neutral buoyancy |
Sources — Rob Allen Tuna Railgun 1m: roballen.co.za (verified 2026-08-11). HammerHead Evolution² 55cm: hammerheadwebstore.com (verified 2026-08-11).
What's the difference between the Rob Allen Tuna Railgun 1m and HammerHead Evolution² 55cm?
Where the two actually differ on the specs we track (3 of 8). Matching specs are omitted.
- Barrel length: Rob Allen Tuna Railgun 1m 100 cm (39.4 in) vs HammerHead Evolution² 55cm 55 cm (21.7 in)
- Bands: Rob Allen Tuna Railgun 1m 2x 16mm vs HammerHead Evolution² 55cm 2x Power Helix bands with Dyneema-coated nylon wishbones/bridles (diameter not published)
- Barrel material: Rob Allen Tuna Railgun 1m aluminum (aircraft-grade, hard anodized) vs HammerHead Evolution² 55cm aluminum (aircraft-grade anodized, integrated shaft guide)