Hi, welcome to the forum. You might want to post this in a different sub-forum. You're in the Lounge & Introduction sub-forum which is just for general conversation. There is an Equipment section which would be more appropriate. You're a lot more likely to get some good answers there. Also "low profile" is pretty generic. What space are you trying to fit this in? Regulated pressurized CO2 systems can utilize a paintball tank or a 5 to 10 pound tank (larger are available) so the height can vary a lot.