Featuring an enhanced 17-round capacity with numbered witness holes, the Mec-Gar® Sig Sauer® P229-1 (E2) 9mm 17-Round Anti Friction Magazine is the perfect upgrade for your P229 (E2) pistol. This aftermarket magazine features heat-treated steel construction with an impact-resistant polymer baseplate and an anti-friction coating for unparalleled strength and corrosion resistance in even the harshest environments. The high-impact polymer follower and high-tensile music wire spring provide smooth, reliable feeding in high-stress target and defensive situations. Building on the success of Sig Sauer’s legendary P226 combat pistol, the compact-sized P228/P229 series delivers hard-hitting firepower in a concealable package. And with Mec-Gar’s enhanced magazines, you’ll have a carry kit you can trust with your life. These upgraded extended magazines are the perfect addition to your Sig Sauer arsenal!