LASur5r, consider looking into the art of Kali. It is a VERY weapon oriented art that is taught to military and law enforcement because of the very question that you ask. It facilitates the use of a knife, asp(if your a cop), and firearms if you have the right instructor. But if you do not, and you are proficient with your arms, you can EASILY see how a sidearm works within the art of kali, thereby giving you the ability to encorporate it on your own. Kali is a no nonsense art that has one end. The most efficient end to your opponent. It is not a pure self defense art, it is more of a duelists art. In that you do not fight unless you must, because if you do, there is usually one end to the fight. Death, is dismemberment. There is little negotiation in fight with a proficient kali practicioner.
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Open Mind, Closed Fist