[Daigoro]

Originally Posted by Tenex

Without Fast Draw a gun armed person should not be able to engage someone closer than 21 feet before they can close and engage: https://en.wikipedia.org/wiki/Tueller_Drill

Any time someone mentions that, I feel obliged to post this:

21 Foot Rule - from Justified

BTW- GURPS-wise, moving 21 feet requires Move 7, which is slightly high for the average character. You'd probably have to call it the 15 foot rule to match the reality of the game system.