Just found these:
This one seems pretty similar to the Uncharted 3 shirt, minus the pocket.
Amazon.com: YogaColors Unisex Baby Thermal Long Sleeve Henley T457: Clothing
And this one is almost perfect, except it seems to only be a womans shirt.
Amazon.com: Splendid Womens Therml Long Sleeve Button Henly: Clothing
This one seems pretty similar to the Uncharted 3 shirt, minus the pocket.
Amazon.com: YogaColors Unisex Baby Thermal Long Sleeve Henley T457: Clothing
And this one is almost perfect, except it seems to only be a womans shirt.
Amazon.com: Splendid Womens Therml Long Sleeve Button Henly: Clothing