The USN/USMC don't have that type of rack in the inventory and we have a different version of the bomb. Ours are called MK-76s (low drag) or BDU-48s (high drag). Our version is an approximate 25 lb/10 lb practice bomb that mimicks the ballistics of a larger GP bomb. They can be fitted with a smoke charge or a night flash bang for night spotting.
Practice Bombs

USMCFLYR