Is $843.99 a good price for FN 509 Tactical 9mm Pistol 4.5" Threaded Barrel, Black - 66-100375?

At $843.99, this is near the average price of $827.66. Fair price — consider waiting for a drop. The average price is $827.66. The lowest we've tracked is $819.0. Tracked for 87 days. Last PSA verification: 2026-05-19. Recorded 2 price changes.

What is the lowest price for FN 509 Tactical 9mm Pistol 4.5" Threaded Barrel, Black - 66-100375?

The lowest price we've tracked for FN 509 Tactical 9mm Pistol 4.5" Threaded Barrel, Black - 66-100375 is $819.00. The highest was $843.99. The current price of $843.99 is 2% above the average price of $827.66.

FN 509 Tactical 9mm Pistol 4.5" Threaded Barrel, Black - 66-100375

UPC: 845737010119
MPN: 66-100375
SKU: 5165450311
Manufacturer: FNH

$843.99 $819.00

Fair Price

At $843.99, this is near the average price of $827.66. Fair price — consider waiting for a drop.

Price Intelligence

High confidence

Against lowest $24.99 above low (3%)

Typical price 3% above typical

Data depth 87 days, 2 price changes

Enough history to judge this against real observed movement.

Tracked for 87 days. Last PSA verification: 2026-05-19. Recorded 2 price changes. The average price is $827.66. The price has ranged from $819.00 to $843.99. The current price of $843.99 is 2% above average.

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