FN 66100489 509 9mm Luger 17+1 4″ Black Target Crown Steel Barrel, Flat Dark Earth Serrated Stainless Steel Slide & Polymer Frame w/Picatinny Rail, FDE Interchangeable Backstrap Grip, Ambidextrous

SKU: TSW|114045UPC: 845737010232Mfr. Part #: 66100489

$572.99

FN 66100489 509 9mm Luger 17+1 4″ Black Target Crown Steel Barrel, Flat Dark Earth Serrated Stainless Steel Slide & Polymer Frame w/Picatinny Rail, FDE Interchangeable Backstrap Grip, Ambidextrous

Warehouse inventory: Out of stock

Store inventory: Not in store

Compare
SKU: TSW|114045 Category: Tag:

Description

The FN 509 is built on the proven architecture of the FNS Compact. Featuring a cold hammer-forged stainless steel barrel; combat-style sights; front and rear cocking serrations; MIL-STD 1913 accessory mounting rail; interchangeable backstraps; double action operation; fully ambidextrous slide stop lever and magazine release; fixed 3 dot luminescent sights and a polymer construction with replaceable steel frame/slide rails. Includes two interchangeable backstraps, two magazines, owners manual, locking device and soft pistol case.

Additional information

upc

845737010232

manufacturer

FN America / FN Herstal

Manufacturer Part Number

66100489

Action

Double Action Only

Barrel Length

4"

Caliber/Gauge

9mm

Capacity

17 + 1

Number of Magazines

2 / 17 rd.

Product Type

Striker Fired

Rate of Twist

1:10"

Safety

No

Sights

3-Dot Fixed

Sights Type

3-Dot Fixed

Slide Description

Serrated

County Armory Spartan helmet emblem

Deals, New Arrivals & 2A News

Join Our Newsletter

Be the first to hear about new inventory, in-store specials, and updates that matter to gun owners.

Thanks for subscribing! Watch your inbox for deals and news.

Firearms Articles & Long Range Technology

County Armory 2A News

Check out the latest information on new products, long-range rifles, custom builds, laser engraving and more at County Armory.

The $200 tax stamp is gone: what Texas gun owners need to know about suppressors, SBRs and the NFA in 2026

October 20, 2026

The $200 Tax Stamp Is Gone — But Is the NFA Really Gone? What Texas Gun Owners Need to Know

The $200 tax stamp is gone for suppressors and SBRs, and ATF has stopped enforcing Form 4 approval. Here is what still applies to Texas gun owners.

Learn More

October 13, 2026

ATF Issues New Guidance on Form 4, NFA Items, Suppressors, SBRs, and What It Means in Texas

ATF will no longer enforce Form 4 approval or tax stamps for suppressors, SBRs, SBSs and AOWs. Here's what changes for Texas buyers.

Learn More
Suppressors are becoming one of the biggest stories in the firearms market

June 11, 2026

Suppressors Are Becoming One of the Biggest Stories in the Firearms Market

The federal suppressor tax stamp dropped from $200 to $0 in 2026, making suppressor ownership more accessible than in decades.

Learn More
Search
×

Select at least 2 products
to compare