Fragmentation Bomb Cluster AN-M1A2

The 100-lb Fragmentation Bomb Cluster AN-M1A2 consists of six, 20-lb Fragmentation Bombs AN-M41A1 assembled in Cluster Adapter AN-M 1 A3.
AN-M 1 A3 is a “quick opening frame” type adapter which holds the bombs in two banks of three bombs each. The adapter is a mechanical type which releases the bombs upon withdrawal of the arming wires.
The bomb cluster is issued with individual bombs assembled but unfuzed; fuzing is done before the cluster is installed in the aircraft. Nose Fuze AN-M 158 or AN-M110A1 is used with Bomb AN-M41A1.
(https://bulletpicker.com/_library.html ) (OP 1280, Aircraft Bombs.pdf)