ProMag Polymer Pistol Magazine Sig Sauer P229 .40 S&W 50-Round Black

ProMag Polymer Pistol Magazine Sig Sauer P229 .40 S&W 50-Round Black. The follower is injection molded and the magazine spring formed from heat treated chrome silicon wire. Specifications for ProMag Polymer Sig Sauer P229 .40 S&W 50-Round Pistol Magazine: Manufacturer: ProMag Gun Model: SIG Sauer P229 Cartridge: .40 S&W Magazine Capacity: 50 Round Package Contents: ProMag Polymer Sig Sauer P229 .40 S&W 50-Round Pistol Magazine ProMag DRM-A74-50RD: Polymer Pistol Magazine Sig Sauer P229 .40 S&W 50-Round Black