Mike,
The Able target is the bullseye target and black is 12'' in diameter.
The Dog target is the low profile silhouette target and black is 19'' tall and 26'' wide.
The B Mod target is the larger silhouette with black 40'' tall and 20'' wide.
Additionally, The order governing the Marine Corps Combat Marksmanship Program is MCO 3574.2K.
Hope this helps.
SS