Wilson Combat Stainless Steel 1911 magwell for Commander, Government, and Officer frames. This has been installed and removed from my pistol. I never fired a round with it. I had a difficult time getting it fit on my particular 1911. Minor modification to the back of your grip panels (for the ears) is required for installation. $20 shipped within the contiguous 48 States or $15 local pick up in Williamsburg VA..