Inspired by the distinctive look of an AR15, the WeaPen tool AR was designed by retired US army ranger Justin Gingrich. The WeaPen is built to make quick adjustments and fixes to your AR. It functions as a Phillips screwdriver, writing pen, defensive weapon and four- and five-prong front sight adjustment tool. Combined with the functionality of a fisher space pen Ink cartridge, the WeaPen gives you an edge other tactical pens can. Material: Steel.