CRKT Williams Defense Pen (Grivory): Under $30 EDC Pick

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A defense pen only earns its place if you actually carry it, and the metal ones lose that test fast. They weigh down a pocket, they set off scanners, and they end up in a drawer within a week. CRKT’s Williams Defense Pen in green Grivory takes the opposite route with a 0.80 ounce polymer body that writes like an ordinary pen and vanishes into a bag or a shirt pocket.

Price: $29.99
Where to Buy: Amazon

James Williams designed it, and his background is the reason the pen exists in this shape. He’s a former Army officer and a martial arts instructor, and CRKT builds the pitch around that resume rather than around raw materials.

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What Makes the Grivory Version Different

CRKT sells the Williams Defense Pen in a few finishes, and this one swaps the usual machined aluminum for Grivory, a glass-reinforced polymer. The company describes it as a handle that combines strength with minimal weight, which is the entire reason to pick it over the metal model. You give up the heft some carriers want in a striking tool, and you get something that reads as a pen and nothing else.

The green colorway, listed by some retailers as British Racing Green, keeps the low profile going. There’s no tactical black coating or aggressive knurling, and that’s the point, since a defense tool that draws attention stops being discreet.

The Weight Is the Whole Pitch

Weight is the quiet reason most defense pens fail their owners. At 0.80 ounces (22.68 grams), the Grivory model weighs well under the aluminum Williams Defense Pen, which CRKT lists at 1.30 ounces. That gap sounds trivial on paper, and in a shirt pocket it’s the difference between daily carry and a drawer.

The pen measures 5.99 inches (152.25 mm) long with a barrel 0.63 inches across, a figure CRKT and its retailers agree on. Those dimensions match a normal full-size pen, so it clips into a planner or a jacket without the bulge a metal kubotan-style pen leaves behind.

How It Actually Writes

CRKT pairs the pen with a Schmidt MegaLine 4889M pressurized cartridge in black. It’s the same refill CRKT lists for its Techliner pens, built to write in cold, heat, and at odd angles. A pressurized cartridge is what separates a usable everyday pen from a novelty, since it keeps ink flowing when a standard rollerball would skip.

It uses a cap rather than a click mechanism, so you pull the cap to write and reseat it to carry. That’s one moving part fewer to fail, and it keeps the tip protected in a bag.

The Self-Defense Angle, Framed Honestly

CRKT markets this as a discreet tool that is, in the brand’s words, ready to strike should the need arise. The company’s claim rests on the Grivory build, which it says is strong and lightweight enough to work as a striking implement while passing as office stationery. That’s the brand’s positioning, and it’s worth reading as marketing first.

A polymer pen won’t match the rigidity of machined aluminum, and no pen replaces training or awareness. If you travel with it, check the rules for your airport and destination first, since carry laws for defense tools vary by location.

What It Costs and Where to Buy

The Williams Defense Pen in green Grivory sits at $29.99, which is the number that makes it easy to justify. That’s the going Amazon price with no discount to wait on, and specialty knife retailers run it a little lower, closer to $26.99. Either way the pen rarely swings far, so there’s no real reason to hold out for a sale.

CRKT Williams Personal Defense Pen- Grivory Handle, Green, TPENWRG

Who Should Carry It and Who Should Skip

This pen fits the person who wants a defense option they’ll genuinely keep on them, not a heavy tool that lives at home. If you value discretion and low weight over the reassurance of solid metal, the Grivory build makes a clean case. The sub-$30 price removes most of the risk in trying one.

Price: $29.99
Where to Buy: Amazon

Skip it if you specifically want the mass of an aluminum pen for harder use, or if you already carry a dedicated tool you trust. For anyone hovering between a plain pen and something with a little more intent behind it, this is an easy, low-commitment place to start.