Electrical guru's, 2ga wire quick disconnects?

I'm looking to build an amp rack that is detachable. I need a way to disconnect the 2 ga power wire and ground. I want something clean looking, not some post with wing nuts. I thought about Military type connectors, but they are expensive.
Any other thoughts,, maybe airplane or boat stuff?
Thanks.
 
Aircraft parts are generally very expensive. Any type quick connector for 2 gauge wire is going to be expensive and hard to find.