.375 Caliber Bullet Space Pen from Fisher
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.375 Caliber Bullet Space Pen

Real rifle shell houses pen that writes upside down and underwater.

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Item #2628
Refill - Black
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The rugged Fisher .375 Caliber Bullet Pen is built to look like a .375 caliber rifle round. In fact, the cap is actually made from an authentic H&H .375 magnum shell. When opened, the pen fits back into the cap, giving you a balanced and sturdy writing instrument.

The ink cartridge used within all Fisher pens, including the .375 Caliber Bullet Pen, was designed for use in the zero gravity environment of space. The pressurized ink cartridge allows the pen to write at any angle, underwater, and even upside down. The specialized thixotropic ink writes three times longer than standard ink, in extreme temperatures, and even on top of grease and oil. Single black ink refills now available.

Features & specs

  • Dimensions: 4" long (closed), 4.5" (opened)
  • Cap is made from an authentic .375 magnum rifle shell
  • Made in the USA
  • Writes upside down, underwater, and in extreme temperatures
  • Lacquered brass finish
  • Manufacturer's unconditional lifetime guarantee
  • Refills: SPR4 medium pressurized

It's a pen that looks like a bullet. You should own several.

The .375 Caliber Bullet Pen is one tough writing implement thanks to its solid, brass lacquered exterior, and its cap which is made from an authentic .375 magnum shell.

Its ink cartridge was designed to work in outer space. So, it has no problem handling the rigors of plain ol' Earth.

The Bullet Pen writes at any angle, upside down, and underwater. Its specialized ink can even write on top of grease.

The Fisher .375 Bullet Pen
The .375 Caliber Bullet Space Pen definitely earns an A+ in the looks department.

Specialized ink writes upside down (and in zero gravity)

In the 1960s, Paul C. Fisher invented the original Space Pen. Designed to work flawlessly in zero gravity and under the strenuous conditions of space travel, the Space Pen was the first pen approved by NASA to be used in space.

Since the 1960s, the Fisher Space Pen has been continuously improved and is still the pen of choice on all manned space flights. The .375 Caliber Bullet Space Pen features this same Space Pen ink refill which can write upside down, underwater, and at all angles.

Unlike traditional pens which lose their steam on a vertical surface, the .375 Caliber Bullet Pen is great for when you're lying on the couch or jotting down a note against a wall.

The Fisher .375 Bullet Pen
The Bullet Pen writes effortlessly upside down.

The Bullet Pen writes underwater!

The unique characteristics of the thixotropic ink used in all Fisher Pens (including the .375 Caliber Bullet Pen) mean that it can write underwater. How awesome is that?!

While you may never need to jot down a note inside of a fish tank, this feature could come in extremely handy if you're writing down a gorgeous woman's number in the rain. Or you spill some water on your papers while in a meeting. Or your next big idea hits you in the shower. Or you have to demonstrate the awesomeness of your pen to your co-workers using a small blue bowl (see picture below).

Fisher Bullet Pen writes underwater.
Unlike wimpy, non-bullet pens, the .375 Caliber Bullet Pen can write underwater.

Writes on oil and in extreme weather conditions

In addition to being able to write underwater, at any angle, and upside down, the .375 Caliber Bullet Pen can also write in extreme temperatures ranging from -30° F (-35° C) to 250° F (121° C).

This means that the Bullet Pen can write on the grease stain of a piece of paper that is inside a pot of boiling water. While you may never need to do this, it's nice to know that you can. It's kind of like owning a Ferrari but never driving it 180 mph (because you don't want to die...or be a humongous douchebag).

Fisher Bullet Pen writes in extreme conditions including on top of oil and grease.
Fisher pens write on oil, grease, upside down, and even in space.

Years of research yielded a pen that works nearly anywhere

The secret to the .375 Caliber Bullet Pen's ability to write in extreme conditions lies within its sealed pressurized ink cartridge.

There are three main distinctions between the ink refill used in the .375 Caliber Bullet Pen and standard ink refills:

  1. It's pressurized. The pressurized chamber forces ink out of the pen even in the weightless environment of space (or when working on a crossword while lying on the couch).
  2. Thixotropic, visco-elastic ink. Paul C. Fisher, inventor of the original Space Pen, was forced to create a new type of ink because existing inks, when pressurized, kept oozing out of the ball point.
  3. Tungsten-carbide ballpoint. The precision steel socket in the tip of the .375 Caliber Bullet Space Pen prevents leaks.

Pressurized ink capsule ensures constant ink flow even when held upside down.
The unique characteristics of the Bullet Pen's ink refill allow it to write at any angle, upside down, and even underwater.

The cap is made from an authentic .375 magnum rifle shell

The cap of the .375 Caliber Bullet Pen is made from an authentic H&H magnum shell which has been given a lacquered brass finish.

Yes, we know what you're wondering: Does it fire a real bullet? No, the Bullet Pen is not a firearm. It's a pen. Albeit one of the most awesome pens we've ever seen.

The Fisher Bullet Pen's case is made from an authentic .375 magnum shell.
This ain't your Momma's pen. It's the Bullet Pen and it's made from a .375 caliber H&H magnum shell.

Packaged in a black plastic gift case

The .375 Caliber Bullet Space Pen makes for a fabulous gift. It comes packaged in a black plastic gift box with a small pamphlet which tells the story of its creation.

The .375 Caliber Bullet Pen is packaged in a black plastic gift box.
The .375 Caliber Bullet Space Pen comes packaged in an attractive black gift case.

Unconditional warranty

The Fisher Space Pen Company is so confident in the quality of their product that they will repair or replace your pen throughout its life, unconditionally.

Ink refills

The special properties of the Fisher Space Pen ink cartridge allow it to last approximately three times longer than a standard ink refill. However, it won't last forever. Luckily, replacement black ink cartridges are inexpensive and are now available directly from us!

The Fisher Bullet Pen refill.
Fisher Space Pen ball point refill.

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