Metalform 1911 Government or Commander 9mm 10 RD Black Nitrate Finish Stainless Steel 9.743BN

First time using Metalform mags. Overall very pleased. I enjoy mags that break down quickly and easily for cleaning. These fit that bill. They were covered in protectant, but 5 minutes in a sonic cleaner, they were ready to go. By design, they hold the rounds very tight. It's a minor issue if you want to unload your mags, but that's my only complaint if that is one. Mags ran 100% perfect in a Sig, Rock Island and Stacatto C. No feeding issues at all. All locked the slides back on the last round, all dropped free and seated liked they should. Essentially complete boring reliability for all 5 I ordered. Which is exactly what you want in a 1911 mag, as we all know the magazine is the weakest link. I will be ordering more very soon.