Class Summary Class Description Lightweight155mmHowitzerLightweight 155mm howitzer (LW155) used by the US Army and USMC, with rotation capabilities for both barrel elevation and swivel-platform heading. Lightweight155mmHowitzerCrankLightweight 155mm Howitzer crank or rotation wheel. M198HowitzerM198 Howitzer to scale. M198HowitzerWithExplosionM198 Howitzer to scale. NonLethalNetLauncherPrototypeSimple model that depicts small boat launched net entanglement system. RifledRecoilingMortar120mmRifled Recoiling Mortar, 120mm This mortar is a proposed candidate for the Marine Corps Expeditionary Fire Support System.