ACT-MAG Sig P220 8 RD .45 ACP nickel P220N-45-8 Armscor 44524

Not only are the mags great, BUT they also work with the new P220s in 10mm. It's a tight fit length-wise, but they work just fine, which is great because the 10mm specific P220 mags are around $45 from Sig and aren't in stock anywhere.

I read about the .45 mags working on a forum, and had to try for myself, so I bought a couple of these. So stoked.