Found this on slickdeals. Subject of he email should say "Halo Reach fans? Enjoy 160 points and a 48 hr Gold pass on us". A friend of mine told me he couldn't find the email and he doesn't have Reach so I guess this only works if you actually have the game.
P.S if anyone is willing to PM me their 48 hr code that would be awesome
P.S if anyone is willing to PM me their 48 hr code that would be awesome