In addition to Centerfire, SportingArms.com http://www.sportingarms.com handles Armscor/Rock Island products, as does Robertson Trading Post http://www.robertsontradingpost.com/.BobCat wrote: Apparently Centerfire Systems http://www.centerfiresystems.com/1911.aspx" onclick="window.open(this.href);return false; has RIA 1911s....
Of these, I've only bought guns from Robertson, and they were very pleasant, accommodating people to deal with. Their web site is interesting, but only lists a fraction of the available guns. Most of their stock is listed on Guns America, but the easiest way to find out if they have what you want or can get it is to call them (731-989-7641).
For those who may care, I suppose it's worth noting that all Armscor/Rock Island products are made in the Philippines, though given that almost everything else affordable is made at least partially in Brazil or eastern Europe, it probably doesn't really matter much.