Carrying a self-defense tool isn’t just about having a weapon—it’s about being prepared and adaptable and ensuring you stay within legal boundaries while protecting yourself. For those who travel frequently or spend time in places where traditional weapons aren’t allowed, non-detectable self-defense tools like G10 Tools offer an interesting option.

G10 Self Defense Tools For The Win!

One of the most well-known examples is the G10 Sharpie insert, a seemingly ordinary marker that conceals a high-strength, non-metallic defensive implement. While this may sound like a perfect solution for personal protection, there’s a lot to consider before you carry one. From legal implications to effective training methods, understanding these tools fully is essential to ensuring they’re used safely and responsibly.

“Non-detectable” self-defense tools are typically made from materials like G10, carbon fiber, or polymer composites—substances known for their strength, durability, and lightweight properties. These tools are often shaped like traditional defensive implements, such as knives, awls, or spikes, but lack any metallic components. This makes them difficult to detect with standard security screening methods, which rely primarily on metal detectors and familiarity of standard self-defense tools.

One of the most popular designs is the G10 Sharpie insert, which transforms an everyday marker into a covert impact or piercing tool. When closed, it looks just like any other Sharpie in your bag or pocket, but inside is a hardened G10 rod that can be deployed in an emergency.

Other similar items include G10 daggers, polymer knives, and non-metallic push daggers, all designed to be discreet but functional. While these tools are highly durable and effective for personal defense, they are not completely invisible to security measures. Advanced imaging scanners, X-ray machines, and thorough pat-downs can still reveal them, making it essential to carry them with awareness of legal implications.

Need to Know

Before carrying a non-detectable self-defense tool, it’s crucial to understand the laws in your area. Many states have specific regulations regarding concealed weapons, and some explicitly ban non-metallic knives or disguised weapons.

For instance, California Penal Code § 20810 prohibits manufacturing, selling, or possessing undetectable knives, while New York Penal Law § 265.01 broadly bans “dangerous knives,” which could include non-metallic defensive tools. Even federally, the Undetectable Firearms Act does not apply to knives or impact weapons, but it does set a precedent for restricting non-metallic weaponry.

Even in states where these tools are legal to own, carrying them concealed could still result in legal trouble if law enforcement believes they were intended for unlawful use. 

Intent matters—if you’re caught with a disguised weapon in a restricted area, you could be charged with possession of a concealed weapon or a dangerous implement.

The Transportation Security Administration (TSA) strictly prohibits non-metallic self-defense tools in carry-on luggage. While they may not trigger a metal detector, TSA agents use imaging technology and manual bag searches to identify hidden weapons. If caught, the tool will be confiscated, and you may face fines or additional questioning.

Public spaces such as schools, government buildings, and private businesses also have their own restrictions. If a business prohibits weapons, carrying one in violation of its policy could result in a trespassing charge. Understanding where you can and cannot carry these tools is just as important as knowing how to use them.

Training Effectively with G10 Tools

Carrying a self-defense tool without proper training is a disaster waiting to happen. Knowing when and how to use it is just as important as the tool itself. This goes for all self-defense technology. 

The G10 Sharpie insert requires different handling than a traditional knife or impact weapon(consider the smooth texture when removing a stubborn pen cap). Its compact size and smooth exterior mean that drawing and deploying it efficiently takes practice. Quick access drills, grip retention exercises, and striking technique training can help ensure that the tool can be used effectively without hesitation in a real-world situation.

Since many non-detectable tools function as impact or piercing weapons, training should focus on targeting sensitive areas that can quickly disable an attacker. Strikes to the throat, collarbone, ribs, or wrist can prevent an assailant from continuing their attack while giving you the opportunity to escape.

Scenario-based training is one of the best ways to refine these techniques. Practicing against a live partner in a controlled environment will help build muscle memory and confidence. Some defensive training courses incorporate non-lethal training tools, allowing students to practice techniques under pressure without risk of injury.

Legality

Even if you use a non-detectable self-defense tool in a justified self-defense situation, you could still face significant legal consequences. Criminal charges such as possession of an illegal weapon, carrying a concealed weapon without a permit, or even assault with a deadly weapon may be levied against you if authorities determine that your tool was classified as an unlawful weapon under local laws. Some jurisdictions have strict regulations regarding “disguised weapons” or “undetectable knives,” and possessing such a tool—even without using it—could result in felony charges.

Prosecutors may also argue that carrying a covert or disguised weapon suggests premeditation rather than a spontaneous act of self-defense, potentially complicating your legal defense. Unlike a conventional knife or a firearm, which are widely recognized as standard self-defense tools, a hidden or non-metallic weapon could be portrayed as something designed explicitly for illicit use rather than lawful protection. If a prosecutor can establish intent or argue that you were “looking for a fight,” you may have a much more difficult time asserting a clean self-defense claim.

Innocent Till Proven Guilty

Beyond criminal charges, civil lawsuits are a very real possibility. If you injure or kill an attacker, their family or estate may sue you for damages, even if your actions were legally justified. Unlike criminal cases, where the standard is “beyond a reasonable doubt,” civil lawsuits rely on a lower burden of proof, meaning you could still be found liable even if no criminal charges are filed. This could result in financial ruin, including damages for medical expenses, lost wages, and even punitive damages.

Additionally, public perception and jury bias can play a crucial role. If your case goes to trial, a jury may view a non-detectable or hidden weapon differently than a standard firearm or pocket knife. Prosecutors may argue that such weapons are associated with criminal intent rather than self-defense, which could lead to a more negative outcome in court.

G10 Implement Makers

Several companies produce high-quality, non-detectable self-defense tools. Some of my favorites:

1. ShivWorks – Renowned for their expertise in edged weapon combatives, they offer G10 and polymer-based tools designed for real-world self-defense applications.

o Website: https://shivworkspg.com

2. Black Triangle – Produces mission-specific, non-metallic defensive tools optimized for concealment and quick deployment.

o Website: https://blktriangle.com

3. Tenet Co Knives – Offers sleek, minimalist G10 self-defense implements designed for deep concealment and effective use.

o Website: https://www.tenetcoknives.com

4. VZ Grips – Known for their high-quality G10 firearm grips, they also manufacture durable, non-metallic self-defense tools like the Punch Dagger and Executive Letter Opener.

o Website: https://vzgrips.com

5. M3 Tactical Tech – Specializes in non-metallic self-defense tools made from durable materials like G10, offering products such as the Ultra Concealment G10 Puncher and the Black G10 Ghost Spike.

o Website: https://m3tacticaltech.com

6. Revenant Corps – Focuses on discreet defense tools, including G10 fiberglass knives and defense Sharpies, designed to be effective in environments where traditional weapons may not be permissible.

o Website: https://revenantcorps.com

Are G10 Tools Worth It?

Non-detectable self-defense tools offer an added layer of protection in environments where traditional weapons are restricted—this can be an incredible benefit. If / when deployed correctly, they could save your life. However, their legal risks and practical limitations mean they’re not the perfect solution for everyone or every situation.

If you choose to carry one, you must be fully aware of your local laws, security risks, and the potential consequences of using such a tool in a self-defense scenario. Like any defensive tool or implement, training should be a priority. Ensuring that if the tool is ever needed, it can be deployed effectively and responsibly.

At the end of the day, self-defense is about being prepared, not just armed. Your best assets are a sharp mind, strong situational awareness, and a clear understanding of the legal landscape. Tools like a G10 Sharpie insert or polymer push daggers can be an incredibly effective addition to your other tools. Still, they should always complement fundamental self-defense skills and strategies rather than replace them.