Blued steel construction High-tensile steel spring Injection-molded polymer follower Removable polymer floor plate Featuring carbon steel construction with a glossy blue finish, the BerettaA(R) 92FS, CX4 Storm 9mm 30-Round Steel Magazine is a genuine Beretta extended magazine, designed to deliver unparalleled reliability and consistent feeding performance while on the move. A full 8" in length, this pistol magazine comes equipped with a plastic baseplate and sleeve for enhanced strength and reliability, while the high-tensile steel spring and polymer follower ensure smooth, jam-free operation. These magazines are ideal for home defense or Cx4 carbine use, due to their much larger capacity. Compatible with 92FS, 92D, 92F, 92G, 92 Brigadier, 92 Elite/EliteIA/Elite II, 90-Two in 9mm, 92 Billenium, 92 Combat Combo, 92 Stock, 92 Vertec, 92 Type L (Inox, Carry), CX-4 Storm (with 92FS Magwell adapter). Double the capacity of your Beretta 92FS pistol of CX4 Storm with a few spare 9mm factory extended 30-round magazines from GunMag Warehouse!