However, the theory that this is a cluster missile with DPICM elements was confirmed.

But not M26, but guided from the GMLRS M30 complex (early version) with 404 submunitions. Defense forces previously used only late versions (M30A1/A2) - the same ones with tungsten balls.

Hence the structure of the missile, which resembles the GMLRS, and the presence of DPICM submunitions.
They were produced for a short time due to the shortage of liberakhs with cluster ammunition.

It can be stated that grandfather Biden opened the "family secret".