Designed to deliver improved comfort and control with 24-round FN® 509™ 9mm magazines, the FN 509 Midsize 9mm 24-Round Magazine Sleeve features impact-resistant polymer construction, engineered to integrate with your pistol
FN 509 Tactical Review [Part 3]
Magazine Accessories
Optics And Suppressor Ready! New FN 509 Compact Tactical PistolThe Firearm Blog
FN 509 Review The Best Factory Duty Sized 9mm?
FN Releases FN 509 Compact Tactical Pistol The Smallest and Most Concealable Tactical Pistol Available - Soldier Systems Daily
Re: Magazine compatibility
509 Midsize MRD - Page 1
All Magazines
FN 509C 9mm 24 Round Magazine Sleeve, Black: MGW
FN 509® Tactical FDE