If you’re considering this, don’t overthink it—check the price, scan the newest reviews,
and make sure the size/fit matches your kitchen space. Below is the simple breakdown.
Prices and availability can change. Amazon’s price at checkout applies.
- Feels practical in daily use (not just “nice to have”)
- Keeps things easier to grab and put back
- Worth it if you’ll use it weekly
- Measure your space (cabinet/pantry/counter)
- Double-check the size in the listing
- Skim the newest reviews for real-life fit notes
What I’d Check Before Clicking “Buy”
- Dimensions: make sure it fits where you plan to use it.
- Materials: look for comments about sturdiness over time.
- Ease of cleaning: especially if it’s used daily.
- Real photos: user photos often reveal scale better than studio images.
Product Details (From Amazon Listing)
Product description
FN Big G-5 Large Butchering & Taiwan Tuna Knife, Hand Forged
The FN Big G5 Large Butchering & Taiwan Tuna Knife is hand forged by Master Kuo from spring steel and has a RC hardness of 60-61. The black scale from the forge forms a natural protective coating that keeps the blade from rusting. It gives them a more rugged, rustic, and all around more manly look, too.
The FN Big series is a collaboration between Jende and Master Kuo to make some seriously large Taiwan Tuna Knives.These really big knives are used on larger fish like Tuna, Mahi, Grouper, etc., it is used to zip through long lateral, sectioning cuts while also chopping where needed.
— Hand Forged from Spring Steel
— Hardness RC 60-61
— Curved blade can chop and slice
— Ideal for Tuna, Mahi, Swordfish, etc.
The FN Big G5 Large Butchering & Taiwan Tuna Knife
Dimensions: — Blade: 200 x 120 x 4.5 mm / 8″ x 4.75″ x 0.18″ — Handle Length: 100 mm / 4″ — Overall Length: 305 mm / 12″ — Weight: 525 g / 18.5 oz
FN Big G-5 Large Butchering & Taiwan Tuna Knife, Hand Forged
FN Big G-5 Large Butchering & Taiwan Tuna Knife, Hand Forged
Knife care: Keep clean with warm water and soap. Towel dry immediately. Do not put into dishwasher.The edge steel can show signs of surface rust over time. Most surface rust can be removed by sharpening the edge or using a scotchbrite pad.
Master Kuo knives are some of the sharpest factory sharp knives we’ve ever seen, but they are capable of even more after our professional sharpening services. We recommend the 2000 and 5000 Grit services for this knife. You can also add a custom made leather sheath.
Kuo Chang-Shi is most famous for forging the original Green Sword of Destiny from the 2000 movie “Crouching Tiger, Hidden Dragon”. His Damascus steel designs incorporate human bones and ashes to imbibe the spirit into the piece, as well as to add some elemental strength to the steel (such as manganese and phosphorus), which is based on historical accounts in ancient Chinese sword making.
Can cut through larger fish while still being compact
Custom Forged Spring Steel
RC 60-61
Blade Height: 120mm / 4.75″ , Spine thickness: 4.5mm / 0.18″ Weight: 525g / 18.5oz
Large Fish knife
Quick Summary
If the size and materials match what you need, this is the kind of purchase that makes everyday kitchen life a bit smoother.
Check today’s price and the latest reviews before you decide.
Quick FAQ
Is this easy to use daily?
If it fits your space and routine, yes—most “regret buys” happen when the size wasn’t measured first.
Is it worth it vs cheaper options?
If you’ll use it regularly, better build and easier day-to-day use usually feels worth the small price difference.
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