What martial art mixes well with BJJ for self defense?

I like clowns approach. Any police training varies from academy to academy because of who's teaching, plus from any other seminar and follow up training they go to, but the largest excepted martial art in the police force is typically Aikido and Judo or a Jujutsu style. Officers have to learn far more than just apprehension and self defense. They also have to know gun safety and marksmanship was well as car training, too. Then they also have to learn and memorize all the paperwork, justices and laws and all that other bureaucratic stuff. All that while maintaining a certain fitness level. Point in short: policemen are not martial artists. Though the individual could be, as a group they aren't.

BJJ is pretty well balanced in application variations. Whenever I've seen what I have of BJJ I can see subtle Hapkido-ish movement in the take downs and holds. Of course BJJ came from Judo, but that doesn't mean they mimic each other. A lot depends on the instructor and what all they incorporate.

Every traditional martial art I've seen includes take downs and submissions to some degree. BJJ is more sport orientated so training only ends at a submission without any further application than that. I think just about any traditional martial art can prove beneficial.

Generally knife and gun disarming techniques aren't taught until more advanced levels just because of the potential danger. Get some stupid kid who finds a real gun and have his buddy try and pretend to shoot him so he can steal it form him... there's no end to such idiocy.

In Hapkido, I didn't start learning weapon disarming until I was a black belt. We had done some knife disarms before that but not guns. The first thing my instructor said about gun disarms is "you better be damn sure you know what you're doing. Screw up and the guy just lost any sympathy he would of had for your butt. Unless you practically know he's gonna pull that trigger, it better to just cooperate."

Forgetting other parts of your question, just to find a martial art that focuses mainly on weapon disarms is already difficult enough. The fact is, if you are confronted by a knife or gun wielding attacker, you should just give them whatever they want and only try to disarm and fight them when there's a very good reason to risk your life doing so. The chance of that happening is quite slim for most people, so with little need for it, there's also little chance anyone has the idea of creating an art that focuses mainly on it.

For self defense in general, I think Wing Chun can be well suited for you with your BJJ background, because it has the same main principles of using leverage and not using force against force. It does teach you weapon disarming on the advanced level, but it's not a major part of the style.

Krav Maga is a great choice though I don't know how compatible it will be with BJJ. Classic Jiu-Jitsu would blend very well with BJJ and it has some disarming tactics.

You could also contact your local police department and ask if they know of any classes specific for this type of training. Some places offer classes where you can just train for this sort of thing. Really depends on what your looking for. The odds of finding a Krav class that is real is very low.

Muay thai bro. The ideal stand up martial art and the ideal grappling martial art. You'll be unstoppable.

Mix weapons fighting(Krabi-Krabong,Kali,Escrima,Arnis) will the best for someone that trained BJJ.

thai boxing for stand up