Behind the scenesEdit
The insta-kill pistol has the one-hit property Instant Death with a DC of 100. Towards the end of the game, Star Wars: Knights of the Old Republic, enemies tend to have a counter roll against this of around 50 DC which means the effect is absolute.
This blaster can only be obtained via cheat code.
The cheat to get this is: giveitem g_w_blstrpstl020.
Another way to acquire it is with the KotoR Savegame Editor.