Does anyone have any suggestions? I've used "simple green" in the past for Warhammer minis.

They are generally painted with water based acrylics. I am unsure of the paint composition used by Britains Petite at the time.

Does anyone have any suggested off the shelf products for easy paint stripping?

These Royal Marines were a birthday present when I was a child. I would love to give them a fresh new coat of paint and make a few conversions as a little fall project.