Different, but in a good way - Strike Industries Ambidextrous Safety Selector Switch

This product is not for people who lack the willingness to retrain. It actually requires a different muscle memory to use effectively, but once you retrain, there's literally no way a milspec AR style safety can be as fast. This guy allows you to choose not only between 60 and 90 degree throws, but the orientation, and therefore control surfaces, of the paddles. Once installed, you can place your thumb over the top, with the joint of the thumb directly over the axis of the safety, and rock the safety back and forth. No longer do you need to pull the lever back into the "safe" position. It's SO FAST now to switch between "safe" and "fire." Being a 19/2011 shooter used to "riding the gas pedal" (safety) helped me wrap my head around this. It isn't for everyone, that's for sure.