I have 3 generations of gear LOl
The old Vietnam LCE and Pistol belt with ammo pouches and buttpack
The LBV from the 90s
And the Molly Plate carrier IBV
I retired in 1995, so I guess I missed the "LBV" from that decade. When I turned in my TA50 in Bad Kreuznach, Germany in late 1994, I had the pistol belt, ammo pouches, first aid pack, and other stuff -- but they weren't made from canvas. I guess nylon? Lighter than canvas anyway.
I've heard of that Molly stuff but it came along long after I retired.