FN FN66-100745 509 Midsize Tactical Pistol (9mm)
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FN FN66-100745 509 Midsize Tactical polymer pistol in 9mm — SKU FN66-100745. Verified attributes: FN Optics Mounting System, fully ambidextrous controls, and interchangeable backstraps. Package quantity on record: 1.
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Description
Description
Product Overview
FN FN66-100745 is recorded as the 509 Midsize Tactical polymer centerfire pistol in 9mm. Source-verified identifiers include manufacturer FN and SKU FN66-100745. Recorded attributes include the FN Optics Mounting System, fully ambidextrous controls, and interchangeable backstraps. Package quantity is recorded as 1 and availability is instock (source facts: product-275501:f002, product-275501:f014, product-275501:f009, product-275501:f010, product-275501:f011, product-275501:f008, product-275501:f015).
Why This Product
The source attributes emphasize optics-ready slide features and configurable ergonomics—details procurement teams use when specifying pistols for customers who require an optics mounting solution and fit options (source facts: product-275501:f009, product-275501:f010, product-275501:f011). The package quantity recorded as 1 indicates single-unit listing or stock entry in the source data (source fact: product-275501:f008).
Key Verified Specifications
- Brand / Manufacturer: FN (source facts: product-275501:f002, product-275501:f006)
- Model / SKU: FN66-100745 (source fact: product-275501:f014)
- Catalog category: Pistols / Polymer Centerfire Pistols (source facts: product-275501:f003, product-275501:f004, product-275501:f005)
- Recorded features: FN Optics Mounting System; Fully Ambidextrous Controls; Interchangeable Backstraps (source facts: product-275501:f009, product-275501:f010, product-275501:f011)
- Package quantity: 1 (source facts: product-275501:f008, product-275501:f012)
- Availability status: instock (source fact: product-275501:f015)
Appropriate Use Cases
- Specifying an optics-ready polymer centerfire pistol for retail customers who require a named optics mounting system and ambidextrous controls (source facts: product-275501:f009, product-275501:f010).
- Ordering single units for demo, range inventory, or individual sale where interchangeable backstraps are a selling point for fit and ergonomics (source fact: product-275501:f011).
What Customers Should Know
- Package Qty recorded as 1 — confirm with the seller that pricing and fulfillment are per individual firearm (source facts: product-275501:f008).
- The FN Optics Mounting System, ambidextrous controls, and interchangeable backstraps are taken from source attributes—verify these features on delivery if they are required for sale or use (source facts: product-275501:f009, product-275501:f010, product-275501:f011).
- Use SKU FN66-100745 when placing orders or reconciling inventory to ensure the correct FN 509 Midsize Tactical configuration is shipped (source fact: product-275501:f014).
Specifications
- Short Stroke Gas Piston Gas System (Rifle Length)
- 18.6″ Barrel Length ( Mid-Weight style, non-fluted)
- 1:8 Twist Rate Rifling

