Just from Googling, they appear to be the "value" line of Heritage safes. The Heritage
site is pretty specific about a lot of their models, but just bounces you out to the Fortress
site for that line, and it isn't specific about much at all. One thing to note, if you compare the weights on the Heritage lines to the Fortress, you can see that they aren't the same. The Heritage safes are listed with 1/8" bodies, and a 30 gun safe is 720 lbs. The 30 gun legacy is 385 lbs.
Heritage says that all of their safes are made in USA. Since there is no such disclaimer on the Fortress site, these may be their imported line.