The Classic – Legal, Lightweight, and Always Within Reach
The Spyderco UK Penknife C94PBK is not a new knife. It is a classic—one of the very few one-handed knives on the market that complies with German §42a regulations and is therefore completely legal to carry in Germany. For years, it has been our best-selling knife at Knife Lounge, and for good reason.
Legal to Carry – In Germany, Austria, Switzerland, and the United Kingdom
Spyderco originally developed the UK Penknife for the British market, where one-handed locking knives are prohibited in public. The solution is elegant: the C94PBK opens one-handed thanks to the Spyderhole, but it does not lock. A strong backspring (slipjoint mechanism) keeps the blade in position—the same principle used in a traditional Swiss Army knife. This makes the UKPK compliant with German §42a regulations and legal to carry without any special reason.
Which UK Penknife Is Right for You?
The UKPK is available with different blade steels. Here's our honest assessment as knife enthusiasts:
| Model |
Steel |
Edge Retention |
Corrosion Resistance |
Ease of Sharpening |
Price |
| C94PBK (this model) |
CTS BD1N |
★★★☆☆ |
★★★★☆ |
★★★★★ |
€ |
| C94PYL – Salt Yellow |
CPM Magnacut |
★★★★★ |
★★★★★ |
★★★★☆ |
€€ |
In short: the C94PBK is the ideal entry point—affordable, reliable, and easy to sharpen. If you want better edge retention and maximum corrosion resistance, the Magnacut version is the way to go.
CTS BD1N – Corrosion Resistant and Easy to Sharpen
As an owner-operated knife shop based in Hamburg, we particularly recommend the C94PBK as an introduction to the world of high-quality EDC knives. CTS BD1N steel offers excellent corrosion resistance, takes a keen edge, and can be sharpened easily with simple tools—a ceramic rod or a basic sharpening stone is all you need.
48 Grams – The Invisible Companion
At just 48 grams with a blade length of 7.4 cm (2.91"), the C94PBK virtually disappears in your pocket. The black FRN (Fiber Reinforced Nylon) handle scales are built without steel liners, making the knife lightweight, sturdy, and comfortable in hand. The characteristic slipjoint click during opening and half-stop provides clear tactile feedback. The finger choil at the base of the blade offers additional protection for your index finger.
The wire clip can be mounted on either side, making the knife suitable for left-handed users as well.
Frequently Asked Questions About the Spyderco UK Penknife C94PBK
Is the UK Penknife C94PBK legal to carry in Germany?
Yes, completely. The UKPK does not lock—the blade is held open by a backspring (slipjoint mechanism). This meets the requirements of §42a of the German Weapons Act and allows the knife to be carried without restrictions. It is one of the very few one-handed knives that fulfills these requirements.
What is the difference between the C94PBK and the Salt versions?
The C94PBK features a CTS BD1N blade—corrosion resistant, easy to sharpen, and offering solid everyday performance. The Salt versions (for example, the C94PYL with Magnacut) provide significantly better edge retention and even greater corrosion resistance, but come at a higher price. The C94PBK is the ideal starting point.
What does §42a compliant mean?
Section 42a of the German Weapons Act prohibits carrying one-handed knives in public—unless the knife does not lock. The UKPK falls precisely under this exception: it can be opened one-handed but has no locking mechanism. Therefore, it is legal to carry.
Is the UKPK suitable for left-handed users?
Yes. The wire clip can be installed on either side, and the Spyderhole can be operated comfortably with either hand.
How do I sharpen CTS BD1N steel?
CTS BD1N is one of the easiest corrosion-resistant steels to sharpen. A simple ceramic rod or a sharpening stone in the 600–1000 grit range is perfectly sufficient. This is a clear advantage over Magnacut—the knife can be touched up easily for everyday use without requiring specialized sharpening equipment.
Where does the name “UK Penknife” come from?
The UKPK was originally developed for the British market, where one-handed locking knives are prohibited. UK stands for United Kingdom, and Penknife refers to the traditional non-locking pocket knife. Today, it is considered a classic throughout Europe.