This is the IWI Masada Slim 9mm 10-round magazine. 

Are you stuck in a restricted state and in need of a replacement or spare factory magazine for your IWI Masada Slim? If so, you’re in the right place!

With a heat-treated steel construction and an anti-tilt polymer follower, you’ll never have to worry about this magazine’s durability or reliability. Rear-facing witness holes allow for instant capacity checks, while the impact-resistant polymer floor plate helps keep your remaining rounds safe from drops. 

Lastly, the corrosion-resistant finish allows for stress-free shooting in any conditions. Whether your Masada Slim stays attached to your hip or resides in your nightstand, this genuine magazine will have your back! 

Given these are only 10-round magazines, you might as well order a few!