Have a few questions. I just bought a Ruger Mini 14 with an extra stock and six high cap mags. I was told that it is a series 183. What does that mean? The guy I bought it from bought it in the 80s. I heard that the earlier Minis are more accurate. Also the mags are 2 35rd Eagle, 2 30 rd Thermomold, 1 20 rd Ruger, and 1 25 or 30 rd no name. What is the general reliability of these mags? I think the Eagles and Thermomolds are new. Any help would be gratly appreciated.