The Arex Rex Zero 1s 9mm 17-Round Magazine is a performance-enhanced factory pistol magazine designed to deliver smooth feeding performance and consistent operation without breaking the bank. Featuring a durable stainless steel body with a corrosion-resistant black finish this double-stack magazine delivers superior durability and reliable performance in any environment. The high-tensile steel spring and polymer follower ensure smooth operation while the removable polymer floor plate offers quick disassembly for maintenance and cleaning and integrates with your pistol’s frame for snag-free performance. Plus this pistol magazine comes equipped with numbered witness holes for quick visual round counts while on the move.