An Airflo Classic Originally Released in 2011, back after a few years of hiatus. The shotgun rail is a perfect mix between a square and a round rail. at 1.5" High and 10" long, it is perfect for any skill level. Each Rail features high quality welding, polishing, and now after years of planning, powder coat. Powder coat is a durable electrostatic process which bakes powder onto metal versus paint. This way you are getting the durablity of paint on a car, but just even slightly stronger. This coating will eventually wear on the grinding surface over time, but it will last much, much longer than paint. These rails are made to last, and with proper care will last a lifetime.