The FN 509’s standard magazine capacity is 17 rounds. But what if you live in a state or city which is adverse to the concept of self-defense, and are obliged to own magazines that hold no more than 10 rounds apiece? Well, in that case, you had better order something *exactly* like this 10-round magazine by ProMag.

ProMag dosn’t do anything odd when they construct a magazine. This one’s body is made of tough steel, which is (A) heat-treated to ensure it doesn’t deform during regular use or after being dropped, and (B) finished with black oxide, which doubly boosts performance by protecting against corrosion and reducing metal-on-metal friction during insertion/extraction. The mag’s spring is made of chrome silicone, and is also heat-treated to make certain it returns to form after having been left compressed for an extended span of time.

Need ammo for this American-made magazine? Great! We can help you out in that department, too!

Features and Specifications:
Magazine Capacity: 10
Ammo Caliber: 9mm Luger
Firearms Platform: FN 509
Quantity: 1
UPC Barcode: 708279016837