This is a list of Heavy Bowguns on Monster Hunter Freedom 2 and Monster Hunter Freedom Unite. For info for their Ammo capabilities, click on the links to their individual pages. * Attaching a Shield to your Heavy Bowgun grants an auto-guard ability. * Attaching a Power Barrel will add a 10% attack bonus based on the initial attack. For example: UltimateLao-ShaoCan has an initial attack power of 480, attaching a power barrel will add 48 raw to that number, resulting in 528 raw.