The 1104S is a Marathon 155mm howitzer produced by Combating Arms America (CAA), formerly known as Johnstown Machine
Works. This gun is a modernized version of the M114A1/M198 howitzer and is capable of firing a range of 155mm rounds including Extended Range High Explosive (ERHE), High Explosive (HE), Fuel Air Explosive (FAE), and Smoke. It has a muzzle velocity of 945 m/s, a maximum firing range of 30.5km (19mi) when using the ERHE, and a maximum rate of fire of 4 rounds per minute. The 1104S is equipped with a recoil system, an improved trauma layer, and an advanced sighting system, allowing it to quickly acquire targets and accurately deliver rounds with less likelyhood of “fouling” rounds.