Pretty bare bones basic, 6 mags of AK style or equivalent, probably R4 or R5 would work too. About the only feature that puts it above the standard P83 is the adjustability. The buckles are silent compared with the P83's Velcro, but I prefer the later ALICE style buckles much better. These were probably locally made in Bop.
Actually, I lie. One other feature is a boon, it has mag retention straps that function as quick extraction straps as well. And yes, they actually seem to work.
So, verdict? Don't throw away your P83 for practicality. Supposedly this rig fit into a modular system. I have seen some other parts, so I can believe this. I can imagine the practicality of having a rig carry extra mags that could be shed in a hurry.
But how about collectability? Apart from homeland defense force collectors out there, who on earth would want this rig? At least that is what I thought until I took another look at a well known photo. Do the buckles on the chest rig for the guy at the far left look familiar?
So all in all, I think I am satisfied with this purchase.