HHmmm. That is interesting. I have never seen that product offering by streamlight. Is it available for civilian purchase or is it military contract only?
They are not allowed to retail them.
Due to various rather serious faults found with the VLI it was not adopted by many (most?) Operators some of whom bought SureFires out of their own pocket. A while back the VBL (Visible Bright Light or Very Bright Light) was introduced to replace the Insight VLI as part of the SOPMOD Kit. The VBL was significantly more modular and has a proven performance and reliability.