Sig Sauer Magazine, 45 ACP, 10 Rounds, Fits P250/P320, Blued Finish MAG-MOD-F-45-10 Trusted by military" police and civilians for decades" SIG SAUER has earned a worldwide reputation for the unquestioned accuracy and unflinching reliability of its pistols and rifles. SIG SAUER magazines provide exceptional fit and reliable feeding in their high quality firearms.