The Walther® P99 Compact 9mm 10-Round Factory Magazine is a genuine Walther factory magazine, designed to deliver consistent operation and jam-free operation in concealed carry applications. This centerfire pistol magazine is constructed of heat-treated steel for lasting strength and reliable corrosion resistance, and comes equipped with an impact-resistant, flush-fit polymer floor plate for improved shock resistance, enhanced durability, and snag-free field performance. The polymer follower and steel wire spring ensure smooth, reliable feeding. Plus, numbered witness holes deliver quick round counts at a glance.