hated mine, total lemon. Horrid customer service, lying salesman on the phone (Arnell) at the service center.
Had good luck with my Auto Ordinance, better luck with Springfield Armory. Much better off with a springfield, for the forged parts alone, and only about 100$ more in my area. AO, Tisas, and Metro run the same range as RIA in cost, and I would look at them first.
My experience with this company differs from most, so I'm sure they mostly make decent stuff. But when the do sell a real piece of junk, they don't stand behind it.