I should've noticed in the picture that the body was shorter than the sleeves... I also noticed that the body area is wider than I expected. I thought it would be more snug since its a stretchy fabric. Maybe I just have a slimmer waist. The neck is about as low as an Express deep V shirt. The arms will be snug to show off your guns.

I'm 5'8, ~130 lbs and ordered the US S. I think it would look better on me if I was 5'6, ~137 lbs.