Can I buy one of these from a shop in MA? I know I'm a couple years behind the times, just read about the Shockwave today. I might be interested in a 20ga or a .410. If they are legal...and someone has a 20ga and they'd be willing to meet and let me give it a try, I'd give you a couple boxes of 9mm in return (and supply my own 20ga). I live on the northshore. Thanks.