Sig Sauer Magazine, 357 Sig/ 40 S&W, 10 Rounds, Fits P229, Blued Finish MAG-229-43-10 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.