Awww, look at the olden days still stuffed all compact and neat into the barrel of a pen. Fisher's original Bullet Space Pen got its start in 1948 when Paul Fisher machined the #400 Bullet Pen from a piece of solid aluminum. Today the pen swaps out the aluminum for solid brass with a chrome finish, and each is still precision assembled, hand tested, and sold with a lifetime guarantee against all manufacturing defects. And that's not even the coolest part, the "Space" part, about Fisher Bullet Space Pens.
You know it, right? Fisher Bullet Space Pens write in any temperature (well, -30 to 250 degrees F) and at any angle. Including upside down. Including at Zero Gravity, as one might find in outer space, or the field surrounding LL Cool J. (Dude's going to be 50 next year! Instead of a Space Pen Fisher should make him a Fountain Pen of Youth.)
Fisher Pens' in-action skills come from their hermetically-sealed, nitrogen-gas-pressurized ink cartridges. With extra hard tungsten carbide ballpoint tips. The pens can write any which way thanks to the steady force pushing their ink towards the out door. Fisher precludes links by using a different kind of ink too, one that's more like a gel, with a consistency similar to toothpaste.