
This cluster is designed to replace the Cluster Adapter T2. It is of the mechanical releasing type similar to the AN-M1A1 Adapter Cluster for fragmentation bombs.
In place of the two parallel rods in the T2 Adapter, two parallel channelized bars of approximately 1/16 inch sheet steel and 47.87 inches in length have been substituted. In addition, four 1/16 inch thin sheet steel bands are substituted for the four cluster circumscribing wires, and three manipulative suspension lugs are set in a special affixed plate atop the upper bar to supersede the two welded lugs of the T2 Adapter in the same manner as the AN-M1A1 Cluster for fragmentation bombs.
TM 9-1904, Ammunition Inspection Guide (1944)