Anti Gravitation Gun

Gravitons are the particles that supposedly transmit gravity, right? The force of gravity. According to our understanding, this anti gravity gun is totally impossible. So maybe gravitons can cause them, like destructive interference, to cancel out local gravity someo imean. I'm just totally speculating. Can it suck gravitons like mabesactually a graviton vacuum cleaner? Not to my understanding that currently there's no way to have anti gravity.