mablesyrup

I have seen someone make a skin for a gun model on counter strike 2 and you can see through the weapon. However when I try to do the same by setting layer 0 to transparent and layer one with a glass material to 50% it just shows as solid in game. This is what it looks like in 3d coat: https://imgur.com/5CIofGs And like this in game: https://imgur.com/79LapJT I've tried exporting in different ways but the cs2 workbench only allows for albedo, roughness, ao, and normal maps like below: https://imgur.com/wHzj5Xu I've also turned off back face culling. This is the example of someone who has pulled it off and I have no clue how - https://www.youtube.com/watch?v=PjCatJ3nVmc Any info would be greatly appreciated cheers.