System for cooling automatic firearms and cannons

A corrosion prevention cooling system for a barrel of a weapon, comprising:

• a plurality of cooling fins;
• a weapon barrel;
• and
• a cylinder having at least a first layer of corrosion-prevention material being made of brass, nickel, or chromium, a second layer of a different corrosion-prevention material being made of brass, nickel, or chromium not forming the first layer, and a plurality of corrosion-prevention inserts interspersed throughout the first layer and the second layer, the cylinder being interposed between the weapon barrel and the cooling fins, wherein, when ammunition is fired through the weapon barrel, the first layer, the second layer, and the inserts of the cylinder permit the cooling fins to dissipate heat away from the weapon barrel while protecting the weapon barrel from corrosively reacting with the cooling fins.