The M117 is a general purpose 750 lb. (unguided) bomb used by the United States military starting in the 1950s and continuing up through Operation Desert Storm, Iraqi Freedom and Afghanistan. It was used extensively in the Vietnam War being carried by everything from F-100s, to F-111s, to B-52s. The bomb consists of a bomb body containing the explosives, one of several different tail assemblies and fuses.
Eduard has issued three different M117 sets. This set represents the M117 with the high-drag tail assembly primarily for use in low altitude deliveries. The tail assembly has four large plates that open up when the bomb is dropped, greatly increasing the drag on the bomb, slowing its descent so as to allow the delivery aircraft an opportunity to get clear before the bomb impacts and explodes.