Cool idea on the XM-25.
It has many capabilities that I might find beneficial in some solid contact.
But it was a really poor execution.
We should be able to upgrade the 40mm to be more effective instead of introducing a new weapon and a new ammo type.
The South Koreans have just adopetd something similar to the OICW.
Daewoo K11
Stats:
http://world.guns.ru/assault/as98-e.htm