Pistol Kanji

Hidden on the Pistol are two Kanji (Japanese) characters. The first, on the top of the ejection port, is the number seven (七, shichi/nana in Japanese, qi/tsat in Chinese). Bungie enjoys using this number as often as possible. The second, found on the bottom of the magazine floor plate, is the character meaning "power" or "strength" (力, chikara in Japanese, li in Chinese).

Interestingly enough, the music for Marathon 2 and Marathon Infinity was performed by a band called "Power of Seven".