LtOlson wrote:I use the old Vietnam load bearing vest

There isn't a single piece there that would have been around in Vietnam, the pouches they used then weren't nylon, they were all canvas. The shoulder straps shown there are at least from the 80's and on, the ones there are much more comfortable then the ones from Vietnam. That belt is also the new style web belt, the ones from Vietnam had metal clasps and, again, canvas not nylon.
Secondly, what you posted is commonly referred to as "LBE" or Load-Bearing Equipment. "LBV" (Load-Bearing Vest) is that shitty first-gen vest that are commonly found for $10 or less at any number of surplus stores.
Modern CIRAS-style vests are the shit, offering much better load-balancing. I can run around with 30lb of weight on me in a CIRAS and not feel it since it's spread pretty evenly around my entire body, try that with LBE and you'll feel it along your shoulders and in your hips pretty quick. I won't go into the life-saving features afforded by a CIRAS over an LBE since they don't matter, this being airsoft and all.
Please do research before opening your mouth (or rather, stretching your typing fingers).