UZI incorporates a few different tools into its Defender line of pens to award them the "tactical" buzzword. This version, the TACPEN6-GM has a glass breaker and handcuff key fitted to its lightweight aircraft aluminum body. Others include a DNA catcher with the cuff key (UZI TACPEN3-GM) and a pen with just a carbide tip glass breaker (UZI TACPEN5-BK).
Technically refined, sickly designed, and durable even in the most unfriendly conditions, UZI implements of mass writing have been long used by the US Army, Secret Service, and Special Forces. According to the pen magnates, they also make a pretty good gun.