It was made by Protective Product International, and it has been modified by rigging a Blackhawk chest rig to it in quite a crude way.
Now...i know for sure PPI had made a model exclusively for Blackwater workers, but i was not be able to find if the model is the one i am showing.
it is the rig, it has been washed and rinsed and it smelled like soap when i bought it, but there are some unmistakable signs of use. Notice how one pouch is noticeably more faded than the others, like a trucker's tan
Rig is attached by paracord, notice the signs of magazines sitting in the pouches.
more paracord to the side, a hole has been punched through both rigs
Blackwater aircrewmen wearing very similar rigs.
this one in particular is modified in the same way