Its armament, power, and range gave the Hellcat great versatility. The basic weaponry consisted of six wing-mounted .50 caliber machine guns, each with 400 rounds of ammunition. Many, including all F6F-5N and F6F-5P variants substituted a 20mm cannon with 200 rounds for the innermost machine gun in each wing. The Hellcat could carry a up two 1,000 pound bombs. Its most destructive weapons were six 5-inch HVAR's (High Velocity Aircraft Rockets), which the author Barrett Tillman described as "equal to a destroyer's broadside."
The next and most common variant was the F6F-5 which featured improvements such as all-metal control surfaces, replacement of rear windows with armor, improved visibility through the windshield as well as numerous other minor advances. Another improvement of the F6F-5 was its ability to carry either the standard armament of six 0.5 in. (12.7 mm) machine guns, or a new, more powerful fit of a pair of Hispano 0.79 in. (20 mm) cannon carrying a minimum effective load of 220 rounds each along with two pairs of 0.5 in. (12.7 mm) machine guns; each armed with 400 rounds. All production F6F-5's had the ability to be fitted with the different armament fits, but only F6F-5N night-fighters, equipped with radar, ever used the latter gun fit.
that being said i want a 20mm variant added to the game!!!