Resurrecting this thread to cosplay as Conviction Sam Fisher at some cons this year!
In a lot of the photos shown, Conviction Sam looks like he's wearing a charcoal sweater and dark green pants. In the game it is definitely a dark green sweater and dark brown pants, though! I'm going with this sweater:
Amazon.com: Acrylic Commando Sweater 1/4 Zip Olive Drab: Clothing (although I might want to dye it to get more of a pine green color).
For the pants, I haven't been able to find any that match, but it should be easy enough to add vertical zippers in the front and velcro cuffs at the bottom to any pair of standard, chocolate cargo pants.
I'm mildly concerned about getting the right backpack to modify but I'll share more on this after I find the right one.
I would like to make a good watch that can glow that nice splinter cell green - anyone have any ideas on this?