This is the ProMag SIG P320 9mm 10-round magazine. 

If you’re looking for a compliant 10-round magazine for your Sig Sauer P320, you’ve found it! 

Although the capacity may be low, the durability and reliability are high thanks to the heat-treated steel construction and injection-molded polymer follower. Additionally, ProMag chose a black oxide finish to further enhance the corrosion resistance. 

These magazines are made in the USA and backed by a lifetime warranty, making them even more appealing. From home defense to the range, you can count on them!

You might as well grab several due to their low capacity!