There is a coupon, or supposed to be, inside of any new Springfield 1911 - U can buy mags a bit cheaper, and some other stuff. I bought a TRP 1.5 years ago - there was not one in the case. I called Springfield, and they sent me one.
In order to make the claim, U gotta send in a copy of your receipt, and I think there is a 30 or 60 day timelimit from the date of purchase to qualify.
To be honest - with shipping costs, it's not THAT great of a deal, unless U buy a lot of stuff at 1 time.