They are selling the parts.

Most people buy a computer; some people buy parts and build their own. Same thing. Personally, I think USGI TP would have to improve to suck, and I only need so many spoons, so why should I (if I can find USGI MREs that I know are mostly legal) buy umpty accessory packs? I'll buy components and build what I need.
_________________________
-IronRaven

When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.