FN 509 Midsize Tactical 9mm Luger Pistol 4.5" Threaded Barrel FDE

FC-845737011604 FNH USA, Inc 66-100745

FN 509 Midsize Tactical 9mm Luger Pistol 4.5" Threaded Barrel FDE
FN 509 Midsize Tactical 9mm Luger Pistol 4.5" Threaded Barrel FDE
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FC-845737011604 FNH USA, Inc 66-100745
Model 66100745 
Action Striker Fired 
Caliber 9mm 
Capacity 24 
Barrel Length 4.5" 
Frame Finish Tan 
Slide Finish Tan 
UPC 845737011604 
SKU 147416 
Ships Ships Within 5 to 7 Business Days After Valid FFL is Received 
  • All firearm sales are final. NO RETURNS.
  • Return to manufacturer for warranty service.
  • Actual buyer must pickup from FFL dealer who will conduct the background check. Learn more
  • Firearm transfer must be the actual transferee/buyer. Click here to see BATFE form "Transaction Record Part 1".
  • Firearms are only available for purchase online.
Typically ships within 5 to 7 business days when a valid FFL is received

A $16.95 handling fee will be charged per order. No additional charge for multiple firearms on an order.


A Mid Size Tactical Model of the FN 509 with Suppressor Sights and a Threaded Barrel

The FN 509 is a versatile, modern, highly respected striker-fired pistol, and now they're happy to offer the mid-size model in a Tactical offering. This model includes a flush fitting 15 round magazine as well as a 24 round extended mag which is great for getting extended reps in at the range. The addition of a threaded muzzle allows the user the ability to attach a suppressor if you choose, and a set of suppressor-height night sights allows you to be able to use your iron sights even when a suppressor is attached. FN's Low-Profile Optics-Mounting System also allows for the addition of a wide range of red dot sights when used in conjunction with the correct mounting plate (not included). A Picatinny accessory rail also allows the attachment of a light or laser to create the ultimate tactical pistol. FN's 509 Midsize Tactical is a modern multi-role handgun that's perfect for duty use, self-defense, or concealed carry.

FN 509 Midsize Tactical Specifications and Features:

  • FN America Item Number: 66-100745
  • Striker-Fired Semi-Automatic Handgun
  • 9mm Luger
  • 4.5" Cold Hammer Forged Stainless Steel Barrel
  • Barrel Threaded 1/2x28
  • 1:10" Right Hand Twist
  • (1) 15 Round Magazine, (1) 24 Round Magazine
  • Suppressor Height 3-Dot Night Sights
  • FN Low Profile Optics Mounting System
  • External Extractor with Loaded Chamber Indicator
  • Front and Rear Cocking Serrations
  • Recessed Target Crown
  • Polished Chamber and Feed Ramp
  • Enhanced Grip Texturing
  • Interchangeable Backstraps
  • MIL-STD-1913 Picatinny Accessory Rail
  • Fully Ambidextrous Slide Stop Lever and Magazine Release
  • Trigger Pull: 4.5 - 6.7 lbs
  • Sight Radius: 5.8"
  • Height: 5.2"
  • Width: 1.35"
  • Overall Length: 7.9"
  • Weight: 27.9 oz
  • Steel Slide
  • Polymer Frame
  • Flat Dark Earth Finish

  • Two Interchangeable Backstraps
  • One 15-round and One 24-round magazine
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  • Select a local Federal Firearms Licensed (FFL) Dealer that will accept the firearm and complete the transfer. Find a FFL Dealer HERE.
  • If you choose an FFL Dealer that is not on our preferred list, you or your FFL Dealer will be required to fax or email us a signed copy of the Federal Firearms License referencing your Cheaper Than Dirt! order number. Download the Firearm Sales Form
  • Pick up your firearm from the FFL Dealer, who will need to do a criminal and mental health background check. Transfer fees may apply.
Buying Firearms on the Internet

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There are thousands of FFL Dealers in the United States. You may choose an FFL Dealer from our preferred listing or you may find a dealer in your area. To find a list of FFL Dealers in your area area CLICK HERE. If you choose a dealer that is not on our preferred list, either you or the FFL Dealer will be required to submit a copy of the Federal Firearms License referencing your Cheaper Than Dirt! order number. The FFL Dealer will usually charge a fee to conduct the transfer. There are duties that the FFL Dealer is required to do during the process which include a criminal and mental health background check through NICS. Remember, the FFL Dealer is doing you a favor and the process takes time to complete. Fees can vary so check with the FFL Dealer ahead of time to request a quote on the fees associated with your firearm transfer. The FFL Dealer is in business to make a profit and your internet purchase may be viewed as competition to their retail business. If you feel the fees are too high, you can search for another FFL Dealer.

Completing the Transaction

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It is important to thoroughly inspect your firearm before completion of the transfer. Once the firearm is transferred into your name, Cheaper Than Dirt! will not accept a return or exchange under any circumstance. If a defect is discovered after completing the transfer, you must contact the manufacturer directly for repair or replacement.