Skip to content
firearmlab.
Firearm modelsModels
1,027
PartsParts
5,395
FitmentsFits
121,240
Contribute

FN FNS 40 Compact

Explore parts, discover makers and check what fits your model.

16 documented listings63 fit unconfirmedBrowse categories ↓

Only you can see your saved models.

Ask about a part →Showcase your build →

Choose a part to see sources and fitment details.

What the compatibility labels mean
How we knowHow we check compatibility
  • Lab testedFit checked by Firearm Lab for the recorded setup.
  • Documented fitmentSupported by manufacturer, partner, or reviewed community evidence.
  • Interface matchMounting details match, but this exact model and part have not been confirmed to fit together.

Check your exact model and part before ordering. Fitment limits

Model details
Manufacturer
FN
Model & version
FNS
Mounting details
MIL-STD-1913 Picatinny
Compatibility records
79

Lights & rail fitment

Lights & Lasers

63 listed
View all 63 parts

Sights

Sights

7 listed
View all 7 parts

Also on this pistol

Holsters

4 makers

Check each manufacturer’s options for your model, light and optic.

Holster makers (4)

Grip & magwells

Magazines

1 listed
Browse magazines

Suggest a missing part →

Categories with no listings (14)

About the FN FNS 40 Compact

Type
Pistol
Manufacturer
FN
Model & version
FNS
Caliber
40 S&W
Mounting details
MIL-STD-1913 Picatinny
Status
Discontinued — compatibility records remain available
Width
1.35"
Height
5.2"
Weight
25.8 oz
Barrel length
3.6"
Overall length
6.7"

Other versions of the FNS

Compare versions and check the details for your exact model.

  • FN FNS 40Same recorded mounting details. Check each part for additional requirements.
  • FN FNS 9 LongslideSame recorded mounting details. Check each part for additional requirements.