Whether you’re a gun enthusiast, war historian, or just love getting stopped by the TSA, you’ll get a kick out of the .338 Cartridge Space Pen. The pen uses an actual .338 Lapua Magnum cartridge, developed in 1982 for the United States Marines who were looking for a target rifle round that could sail straight and true for 1000 yards. The cap is an actual shell, while the insides have been cleared out and replaced with a classic brass cartridge space pen.
The original Space Pen was tested by NASA for two years before becoming the official pen of the Apollo 7 Space Mission in 1968. The pressured ink cartridges allow for smooth, dark lines even at extreme angles. Write on wet or greasy paper, draw upside down, and even sketch in zero G. This pen can handle whatever your hands can throw at it.