Originally Posted by Absalom

A quickly accessible knife is always useful. But promoting one to the official “gun retention knife” seems a bit over the top.

Knives have pretty much zero stopping power. In a potentially life-or-death struggle for your gun, taking one hand out of the fight in order to try hacking away at your attacker with a small knife should likely not be a major component of your defensive tactics. Having him die from bleeding out 20 minutes later may do you no good at all.