Hello, does anyone know the weight difference between the 20 inch 590a1 and the non-heavy 590? My scale lists the heavy barrel 590a1 at 2lb and 8.5 ounces. I'm thinking about ordering the 20 inch non heavy from mossberg and selling the heavy barrel but i would first want to know if it's worth it. How much lighter is the 20 inch non-heavy barrel? Thank you.