I live in Western NY so the liberals in NY City control everything and make it almost impossible to carry a gun or pepper spray. But I got this friend who used to work for me who is what he calls an invention techie. He was worried I'd get mugged hunting some of the seedier parts of my local cities so he made this nifty little thing for me that uses a CO2 cartridge found at wally world a box of three cost around five bucks. Anyway it fires a small bean bag and can knock a person out. I've never had to use it but in testing it it took one of my bigger employees 6'3" 230 lbs down and knocked the air out of him after taking a shot to the midsection at around five feet away. for the most part it resembles a pvc pipe with a valve attached and the only metal parts are where the CO2 cartridge attaches to the bottom. I'd post a picture but not sure if I'd get into trouble or not. :P