FN FNS-40 Longslide 40 S&W Striker-Fired Pistol
Specs at a glance
About this product
Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms and accessories. The FN FNS-40 Longslide 40 S&W Striker-Fired Pistol is a reliable, high-performance handgun designed for both duty and personal defense. Its extended slide improves accuracy and sight radius. Available now for $675 with fast shipping from our Kansas warehouse.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
| Product Type | Striker-fired pistol |
|---|---|
| Caliber | 40 S&W |
| Barrel Length | 5" (Longslide) |
| Capacity | 14+1 rounds |
| Frame Material | Polymer |
| Slide Material | Stainless steel |
| Finish | Matte black |
| Sights | Fixed 3-dot |
| Weight | 25.5 oz (unloaded) |
| Overall Length | 8.2" |
| Height | 5.5" |
| Width | 1.35" |
| Country of Origin | USA |
| SKU | FNS-40-LS |
Key Features
- Extended 5" barrel for improved accuracy
- Striker-fired operation for consistent trigger pull
- Ambidextrous slide stop and magazine release
- Picatinny rail for accessories
- Three interchangeable backstraps
- Loaded chamber indicator
Pros & Cons
✅ Reliable performance in all conditions
✅ Excellent ergonomics with adjustable grips
✅ Longslide design enhances accuracy
✅ Picatinny rail for lights/lasers
✅ Made in USA quality
❌ Limited aftermarket support compared to Glock
❌ Heavier than some polymer competitors
Who Should Buy This
Buy it if: You want a duty-grade 40 S&W pistol with enhanced accuracy from the longslide design, or need a reliable home defense weapon.
Skip it if: You prefer compact carry pistols (see our compact handguns) or want maximum aftermarket support.
Frequently Asked Questions
Where can I buy the FN FNS-40 Longslide online?
Available at Kansas Gunshop (kansas-firearms.com) with fast shipping from Wichita, KS.
Is this pistol suitable for concealed carry?
The longslide design makes it better suited for duty or home defense than concealed carry.
What comes in the box?
Pistol, two 14-round magazines, interchangeable backstraps, cable lock, and manual.
Does Kansas Gunshop handle FFL transfers?
Yes, we're a licensed Kansas FFL dealer and can process transfers.
What's the warranty on FN pistols?
FN offers a limited lifetime warranty to the original purchaser.
✅ Same-day shipping from Wichita, KS
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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About this review: Our evaluations are based on hands-on experience with the product and customer feedback. Last updated: April 2026