This is the ProMag Remington 597 .22 LR 22-round magazine. 

Never lose track of your remaining rounds again with this translucent polymer magazine from ProMag!

When you pair the translucent smoke body with the injection-molded polymer follower, you wind up with a highly impact-resistant yet lightweight magazine. Inside, the chrome silicon wire spring applies the perfect pressure to keep each round aligned and ready to go. 

ProMag makes these right here in the United States and backs every magazine with a lifetime warranty – what more could you ask for?

These will likely sell out quickly – grab a few today!