Speargun Size Guide
Find the Right Speargun for Your Diving Style
At Aimrite International, choosing the right speargun size comes down to three key things:
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Visibility
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Target Species
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Dive Environment
A shorter gun offers better manoeuvrability in reefs and dirty water, while a longer gun delivers greater range and accuracy in clear water and bluewater hunting.
Quick Size Guide
| Speargun Size | Best For | Typical Visibility | Target Species |
|---|---|---|---|
| 70–80cm | Tight reef hunting, caves, dirty water | 1–5m | Bream, coral trout, small reef fish |
| 90cm | All-round reef gun | 3–8m | Coral trout, sweetlip, snapper |
| 100cm | Most versatile size | 5–12m | Spanish mackerel, trout, reef pelagics |
| 110cm | Clear water reef & light bluewater | 8–15m | Mackerel, cobia, tuna |
| 120cm+ | Bluewater hunting | 12m+ | Wahoo, dogtooth tuna, large pelagics |
Choosing the Right Size
70–80cm Spearguns
Close Quarters & Dirty Water
Perfect for:
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Reef holes and caves
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Low visibility conditions
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Shore diving
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Fast tracking around structure
These shorter guns swing quickly and are easy to manoeuvre around coral bommies and tight terrain.
Best suited for:
Coral trout, reef fish, estuary species and beginner divers.
Recommended Aimrite Models
90–100cm Spearguns
The Ultimate All-Rounder
If you only own one speargun, this is the sweet spot.
A 90–100cm gun gives you:
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Excellent versatility
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Balanced power and manoeuvrability
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Enough range for most reef and some pelagic species
This is the most popular size range for Australian conditions.
Best suited for:
Coral trout, mackerel, snapper, sweetlip, cobia and general reef hunting.
Recommended Aimrite Models
110–120cm+ Spearguns
Clear Water & Bluewater Hunting
Longer guns provide:
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Greater shooting range
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Increased shaft speed
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Better accuracy in open water
Designed for divers targeting powerful pelagic species in clear conditions.
Best suited for:
Wahoo, tuna, Spanish mackerel, mahi mahi and dogtooth tuna.
Recommended Aimrite Models
Railgun vs Rollergun
Railguns
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Simpler setup
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Fast reloads
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Lightweight and versatile
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Perfect for reef and everyday diving
Rollerguns
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More power for their size
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Increased range and efficiency
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Reduced recoil
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Ideal for clear water and larger fish
For divers chasing maximum performance and range, roller systems excel in bluewater environments.
Beginner Recommendation
If you're new to spearfishing:
Start with a 90cm or 100cm Railgun
These sizes provide:
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Easy handling
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Good range
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Versatility across most conditions
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Faster learning curve
A 100cm is often considered the best “do-it-all” size for Australian spearfishing.
Pro Tip From Aimrite
Match your gun size to the visibility — not just the fish.
Even large fish can be landed with smaller guns in dirty water, while clear conditions often require additional range and accuracy.
Why Aimrite?
Since 1998, Aimrite International has built performance-driven spearguns trusted by divers worldwide.
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Australian designed & assembled
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Individually tested and hand assembled
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Lifetime warranty
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Proven on world-record fish
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Built for real spearfishing conditions
Performance Where It Counts.
