I used to carry a TM hi-capa 4.3 (shorter then the 5.1) in a Blackhawk (1911) holster on my belt but in the back. Being on the back it doesn't get dirty and it's very secure. You can also keep it under your jacket. I got a lot of kills with it because most players are taken by surprise when you pull it out of thin air. You dont have to push on a button to release it from the holster, so If your on your belly with your rifle and need to react rapidly, it's easy to pull out and make the kill before the other player can react. It's a great rush to make a kill like that