Butterfly Trench Knife – 5-Inch Serrated Blade, 11 Inches Overall

There’s a reason the trench knife design has stayed relevant for over a century — it works. If you’re looking for a fixed-carry defense knife that feels substantial in your hand, the Butterfly Trench Knife brings serious construction to a compact, 11-inch package. The serrated blade, knuckle guard, and latch safety make this a well-thought-out tool, not just a display piece.

Who This Knife Is For

This knife is a practical choice for someone who wants a reliable personal defense blade they can keep at home, in a pack, or at a campsite. It fits the outdoors-minded person who values a blade that can handle real tasks, the collector drawn to classic combat knife design, and the prepared individual who wants a last-resort defensive tool with some history behind its form. It’s not a pocket carry knife — it’s something you reach for when you need it most.

Is It the Right Fit for You?

Choose It If You Want

• A balisong-style knife with a traditional trench design and real defensive features
• A serrated stainless steel blade that handles cutting tasks and defense
• A removable knuckle guard for added hand protection
• A built-in latch safety to keep the blade secure when not in use

Consider Another Option If You Need

• A compact folding knife for everyday pocket carry
• A fixed-blade knife with a longer reach or thicker spine for heavy outdoor work
• A non-lethal option like pepper spray or a stun gun for close-range personal defense

Butterfly Trench Knife Features and Benefits

• 5-Inch Serrated Blade: The serrated edge adds cutting ability that a straight blade alone doesn’t give you — useful for utility tasks and effective as a defensive edge.
• Stainless Steel Construction: Both the blade and handle are stainless steel, which means durability and resistance to corrosion over time.
• Removable Knuckle Guard: The knuckle guard adds a layer of hand protection and stays true to the trench knife heritage. Remove it when you don’t need it.
• Latch Safety: A secure latch keeps the knife closed and prevents accidental opening — an important feature for any knife you store or carry.
• 11-Inch Overall Length: At 11 inches total, this knife has a presence without being unwieldy. The 5-inch blade gives you reach; the handle fills the hand.
• Classic Balisong Design: The butterfly-style handle is a proven, recognizable form that has stood up across generations of use.
• Black Finish: The all-black profile is clean and low-profile, whether you’re storing it at home or packing it for a trip.

How the Butterfly Trench Knife Compares

Here’s how this knife stacks up against two common alternatives a buyer might also consider.

Care and What’s Included

What’s in the Box

• Butterfly Trench Knife with removable knuckle guard

Care

Stainless steel holds up well, but it still benefits from routine maintenance. Wipe the blade dry after any exposure to moisture. If the pivot points on the butterfly handle feel stiff, a drop of light oil keeps them moving cleanly. Store it latched and out of reach of children.

Legal Notes

Butterfly knives — also called balisongs — are restricted or prohibited in several U.S. states and localities. Blade length limits, carry restrictions, and outright bans vary widely and change over time. Before you buy or carry this knife, check the laws in your state and city. I can’t give legal advice, and I won’t pretend the rules are the same everywhere — because they’re not.

Butterfly Trench Knife: Frequently Asked Questions

What is the blade length on the Butterfly Trench Knife?

The Butterfly Trench Knife has a 5-inch serrated blade. The overall length of the knife — handle and blade together — is 11 inches. That gives you a solid grip with real reach, without being oversized for storage or transport.

Does the Butterfly Trench Knife have any safety features?

Yes. It comes with a latch safety that keeps the handles closed and the blade secured when you’re not using it. The knuckle guard is removable, so you can configure it for defense use or take it off depending on how you plan to carry and store the knife.

What is the handle made of?

The handle is stainless steel, same material as the blade. That makes the whole knife consistent in durability and corrosion resistance. The butterfly-style handles pivot open to reveal the blade, which is the defining feature of the balisong design.

Is the Butterfly Trench Knife legal to carry in my state?

Balisong-style knives like this one are regulated differently depending on where you live. Some states restrict them by blade length, others ban them entirely, and local ordinances can add another layer of rules on top of state law. Always check your state and local regulations before purchasing or carrying this knife. Laws change, and it’s your responsibility to know them.

Add This Knife to Your Personal Defense Setup

The Butterfly Trench Knife is a capable, well-built blade at a price that doesn’t require much deliberation. Add it to your cart and know you’re getting a piece of real defensive hardware — just make sure you’ve checked your local laws first.