Most people around modern airplane models are aware of the cluster bomb dispensers that have been used for a while now. They are basically carriers of many smaller sub munitions that open and spread the smaller bombs over a wider area. In this case, the WCMD (Wind Corrected Munitions Dispenser) is a tail kit for cluster bombs (CBU-87, 89 & 97) which convert the normal cluster bombs by adding a different tail unit to allow corrections to trajectory based on wind changes allowing for more accurate dispersal. They were first dropped from a B-52 in Afghanistan in 2002. They are currently use on F-16C and F-15E.
Videoaviation.com has issued a set of these munitions. The set comes with front and back parts for four bo0mbs and two sprues of lugs for the attachment points. Also included are decals to cover the bombs and also red remove before flight tags.