Skip to main content
We may get paid by partner for deals, including promoted items

Menu

Trending
Top Brands Palmetto State ArmoryHot Yeti CoolerDeal NatchezDeal SitkaDeal 5.11Sale Winter Clearance Amazon Pickleball Sale Amazon FitnessHot Stores
FN 503 by Fn -
24% off

Product Description

This 8 round magazine is compatible with your FN 503. It features a stainless steel body with a black base pad.

FN 503

at Guns.com
Browse all Guns.com deals
$37.99 $49.99 24% Discount
You save $12.00
In Stock at Guns.com
Price verified 1d ago
Buy Now at Guns.com
Secure checkout Easy returns
or compare prices
Amazon logo Amazon eBay logo eBay

Product Details

Brand Fn
Fn

More from Fn

KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN SCAR 15P Black 300 Blackout 30+1 7.50" Pistol FN SCAR 15P Black 300 Blackout 30+1 7.50" Pistol View Details
$3578.07 $4072.60
12% off
Buy Now · $3578.07
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN SCAR 15P Ultra-Compact 5.56x45mm 7.50" Pistol FN SCAR 15P Ultra-Compact 5.56x45mm 7.50" Pistol View Details
$3578.07 $4072.60
12% off
Buy Now · $3578.07
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN SCAR 15P Flat Dark Earth Piston-Driven 5.56x45mm 30+1 7.50" Pistol FN SCAR 15P Flat Dark Earth Piston-Driven 5.56x45mm 30+1 7.50" Pistol View Details
$3578.07 $4072.60
12% off
Buy Now · $3578.07
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 66100940 509 LS Edge 9mm Luger 5" Barrel 10+1, Matte Black Polymer Frame With Mounting Rail, No Manual Safety, Optics Ready FN 66100940 509 LS Edge 9mm Luger 5" Barrel 10+1, Matte Black Polymer Frame With Mounting Rail, No Manual Safety, Optics Ready View Details
$1030.22 $1294.00
20% off
Buy Now · $1030.22
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN High Power FDE PVD Ambidextrous 9mm Luger 10+1 4.70" Target Pistol FN High Power FDE PVD Ambidextrous 9mm Luger 10+1 4.70" Target Pistol View Details
$1044.27 $1199.00
13% off
Buy Now · $1044.27
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN High Power Black Target Crown 9mm Luger 10+1 4.70" Target Pistol FN High Power Black Target Crown 9mm Luger 10+1 4.70" Target Pistol View Details
$1044.27 $1199.00
13% off
Buy Now · $1044.27
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 545 Tactical Flat Dark Earth Optic Cut Threaded Barrel .45 ACP 10-Round 4.71" Semi-Automatic Pistol FN 545 Tactical Flat Dark Earth Optic Cut Threaded Barrel .45 ACP 10-Round 4.71" Semi-Automatic Pistol View Details
$1056.57 $1202.60
12% off
Buy Now · $1056.57
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 545 Tactical Optic Ready Threaded 45 ACP 10+1 4.71" Pistol FN 545 Tactical Optic Ready Threaded 45 ACP 10+1 4.71" Pistol View Details
$1056.57 $1202.60
12% off
Buy Now · $1056.57
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 509 Midsize Tactical Black 9mm 2x10R Holosun 407C Optic & Suppressor-Ready Pistol FN 509 Midsize Tactical Black 9mm 2x10R Holosun 407C Optic & Suppressor-Ready Pistol View Details
$922.50 $1050.00
12% off
Buy Now · $922.50
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 509 Tactical Optic Ready Threaded 9mm Luger 17+1/24+1 4.50" Pistol FN 509 Tactical Optic Ready Threaded 9mm Luger 17+1/24+1 4.50" Pistol View Details
$859.77 $989.00
13% off
Buy Now · $859.77
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 509 Tactical Flat Dark Earth Optic Cut Threaded Barrel 9mm Luger 17+1/24+1 4.50" Striker-Fired Pistol FN 509 Tactical Flat Dark Earth Optic Cut Threaded Barrel 9mm Luger 17+1/24+1 4.50" Striker-Fired Pistol View Details
$859.77 $989.00
13% off
Buy Now · $859.77
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 510 MRD Full Size Black 10mm Auto 15+1 4.10" Optic Ready Pistol FN 510 MRD Full Size Black 10mm Auto 15+1 4.10" Optic Ready Pistol View Details
$847.47 $964.60
12% off
Buy Now · $847.47
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 509C MRD Compact Optic Ready 9mm Luger 10+1 3.70" Pistol FN 509C MRD Compact Optic Ready 9mm Luger 10+1 3.70" Pistol View Details
$782.28 $890.40
12% off
Buy Now · $782.28
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 509M MRD Mid-Size Black Optic Ready 9mm Luger 10+1 4" Pistol FN 509M MRD Mid-Size Black Optic Ready 9mm Luger 10+1 4" Pistol View Details
$736.77 $839.00
12% off
Buy Now · $736.77
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN Reflex MRD Viridian RFX-11 Green Dot 9mm Luger 10+1 Everyday Carry Pistol FN Reflex MRD Viridian RFX-11 Green Dot 9mm Luger 10+1 Everyday Carry Pistol View Details
$681.96 $776.22
12% off
Buy Now · $681.96
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 502 Tactical Black Optics Ready 22 LR 10/15+1 4.60" Threaded Barrel Pistol FN 502 Tactical Black Optics Ready 22 LR 10/15+1 4.60" Threaded Barrel Pistol View Details
$490.77 $619.00
21% off
Buy Now · $490.77
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 502 Tactical Optic Ready Threaded Barrel 22 LR 10+1 4.60" Semi-Auto Pistol FN 502 Tactical Optic Ready Threaded Barrel 22 LR 10+1 4.60" Semi-Auto Pistol View Details
$490.77 $619.00
21% off
Buy Now · $490.77
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 502 Tactical FDE Optic Ready Threaded Barrel .22 LR 10+1 4.60" Rimfire Pistol FN 502 Tactical FDE Optic Ready Threaded Barrel .22 LR 10+1 4.60" Rimfire Pistol View Details
$490.77 $619.00
21% off
Buy Now · $490.77
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN 502 Tactical Flat Dark Earth Optic Ready .22 LR 4.60" Threaded Barrel Pistol FN 502 Tactical Flat Dark Earth Optic Ready .22 LR 4.60" Threaded Barrel Pistol View Details
$490.77 $619.00
21% off
Buy Now · $490.77
KFF Defense
KFF Defense
Last Updated:
Aug 30, 2026 01:52 AM
FN Reflex Micro-Compact Black 9mm Luger 15+1/11+1 3.30" Ambidextrous CCW Pistol FN Reflex Micro-Compact Black 9mm Luger 15+1/11+1 3.30" Ambidextrous CCW Pistol View Details
$527.67 $614.00
14% off
Buy Now · $527.67
KFF Defense