I am buying my father a Rock Island Armory compact 1911 .45. Its is a very good gun he had one before and sold it to buy a Springfield Armory XD because the high cap. magazine. He soon realized he really like it but he did not like it as much as the 1911. He has been fighting cancer for a little over a year now, and earlier this week the doctor told him he only had 3-6 months to live. So I decided I was going to get him another RIA before then. I put one on hold at a local gun store until this coming Friday but it only has one magazine. My question is will a magazine from any compact 1911 work with it? or will I have to find one specifically for a Rock Island? Sorry for such a long post just giving a little background on the situation, and that I do not know as much about 1911's as others.