I'm new here and stumbled across this forum while looking for some M Frame lenses and frames. I have a pair from 2010 and they are still in decent shape but wanted to see what my replacement options are. I see that US Standard Issue recently restocked their M Frame supply so I picked up some lenses and an extra frame before they stop production on the M Frame completely. I'm hoping to find some replacement parts here in the future once they do stop production.