The US Army has patented a system to convert surplus 155mm projectiles containing bomblets into 40mm grenades.

Someone in the Pentagon thinks it would be cheaper to convert surplus bomblets into 40mm grenades than to dispose of them. I had always assumed that the cost of the secondary explosive material was only a small component of the total cost of a grenade. This seems like a scheme to reclassify 155mm disposal costs as 40mm manufacture costs.