This is the ProMag FN FNX-45 .45 ACP 15-round magazine.

Let us introduce you to the affordable and reliable ProMag aftermarket magazine for the FN FNX-45!

The heat-treated steel body features a black oxide finish that delivers top-notch corrosion and scratch-resistance. At the same time, the injection-molded anti-tilt polymer follower keeps the magazine running smooth as butter. 

Additionally, ProMag backs this magazine with a lifetime warranty, allowing you to put it through serious use with no worries. You can never have too many magazines for your FN FNX-45, so why not grab a few more?

Save some money for ammo and buy a few of these aftermarket magazines today!