This is the ProMag Shadow Systems CR920 9mm 12-round magazine.

Keep your Shadow Systems CR920 running flawlessly with this high-quality 12-round magazine from ProMag!

Constructed from heat-treated steel and featuring a black oxide finish, this magazine delivers superior durability and corrosion resistance. Inside, you’ll find an injection-molded polymer follower and a heat-treated chrome silicon wire spring that provides reliability to match. 

To top it all off, ProMag backs every magazine with a lifetime warranty. Whether you’re heading to the range or defending your home, this magazine will have your back! 

At this price, you might as well grab a few!