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FN 509® Compact MRD w/ Compensator

Available for commercial, law enforcement, and military.

MSRP: $1,099

Full-size performance in a compact package

With our patented Low-Profile Optics Mounting System and proprietary auto-indexing compensator, the FN 509 MRD compact with quick-detach compensator joins the ranks packing full-size performance in a compact package. The pistol is striker-fired with a compensated barrel featuring an approximate 25 percent muzzle flip reduction. The compact comes standard with a 12 and 15 round magazines. The optics mounting system accepts nearly all major optic footprints and features all-black co-witness iron sights. The ambidextrous controls aid in manipulation and the texturing on the two included backstraps provides better recoil management.


66-101794Compensated 509 Compact MRD FDE
66-101795Compensated 509 Compact MRD FDE
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  • Caliber: 9mm
  • Operation: Double-action
  • Mag Capacity: 10 or 12/15 Rd.
  • Weight: 25.5 oz.
  • Barrel Length: 4.02"
  • Overall Length: 7.4"
  • Twist Rate: 1:10" RH
  • Height: 5.2" / 4.8"
  • Width: 1.35"
  • Trigger Pull: 5.5 - 7.7 lb.

Primary Features

Full-sized performance in a concealed carry package

Includes FN Compensator that was introduced on the FN 509 CC Edge

FN Low Profile Optics Mounting System with plate adapters for direct mounting of more than 10 optics

All-black co-witness iron sights

Full ambidextrous controls

World-class, military-grade barrels


Easily racked, combat-style sights

External extractor; loaded chamber indicator

Improved front and rear cocking serrations

Aggressive FN 509 slide serrations for improved manipulation


Auto-indexing compensator

Cold hammer-forged stainless steel

Recessed target crown

Polished chamber and feed ramp


Shortened grip for easier concealment

Enhanced grip textures which enables faster follow-up shots in all conditions

Interchangeable backstraps

MIL-STD-1913 accessory mounting rail


Fully ambidextrous slide stop lever and magazine release


High visibility, low-friction follower; polymer base with black finish

Comes with one 12-round and one 15-round magazine or two 10-round magazines

Compatible with FN 509 17-round and 24-round magazines with appropriate magazine sleeves


Two interchangeable backstraps

One 12-round and one 15-round magazine or two 10-round magazines

Owner’s manual

Locking device

FN logo soft pistol case