Intuitive Aerial's gimbal carries the Flex 4k. They are selling it independent of the Aerigon now. We used it when we flew the 4k for Brainfarm. We flew it on Aerigon that time but as long as your heli can carry the 10 pound gimbal plus the 23-ish pound 4k rig you're good to go. They also have the Newton if you're trying to fly the 4k on a drone. Email firstname.lastname@example.org and ask him about the gimbal. i think the Aerigon gimbal goes for about $17k and a Newton runs about $47k. Newton is bad ass... we are using it on our picture cars with a Flowcine Black Arm.