In this video I go over a few different USGI, suspender systems, and specifically the modification of a FLC inner belt, to serve as a modern belt kit along the lines of ALICE / LC2.
It's funny to see that what is old is new again and there's a renewed interest in belt kit. While a few of the USGI MOLLE belt kits are interesting to be honest I think the simple FLC inner belt, when paired with suspenders, is more than satisfactory and is going to be hard to beat for the price.