The hands should be compatible, but the hand covers most likely won't be and there aren't covers included in this set if you don't already have any 30MM kits. Luckily, if you want some that are both WFM compatible and include covers, check out the set named W-23, which includes a bunch of different hand styles with white and gray covers and some miscellaneous customization parts, or the older Gundam Build Knuckle sets for a larger variety of hand sizes and shapes albeit with only gray covers