FN 545 Tactical

FN America · Full-Size Pistol · Striker · 4.71″ Barrel · Optics-Ready

Caliber: .45 ACP

Effective Range: Close quarters (~0–50 yd)

Compatible Optics

55 compatible optics in our catalog.

TypeBudgetBrandSightIdeal MagnificationDirect Fit Only

Showing 55 of 55

Red dots & reflex sights

1x, no magnification — fast target acquisition up close.

Athlon Midas Burst Pistol Red DotNeeds Mount
3 MOA dot · Enclosed
Requires: FN 509 Plate System plate
≈ $230
MSRP
Athlon Midas EDC Pistol Red DotNeeds Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $200
MSRP
Athlon Midas Flash Pistol Red DotNeeds Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $250
MSRP
Burris FastFire 3Needs Mount
8 MOA dot · Open
Requires: FN 509 Docter/Venom plate
≈ $299
MSRP
Burris FastFire 4Needs Mount
3 MOA dot · Open
Requires: FN 509 Docter/Venom plate
≈ $419
MSRP
Burris FastFire CNeeds Mount
6 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $259
MSRP
Bushnell RXM-300 Reflex SightNeeds Mount
4 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $200
MSRP
Bushnell RXS-100 Reflex SightNeeds Mount
4 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $150
MSRP
Bushnell RXS-250 Reflex SightNeeds Mount
4 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $200
MSRP
Crimson Trace CT RADNeeds Mount
3 MOA dot · Open
Requires: FN 509 Docter/Venom plate
≈ $242
MSRP
Crimson Trace CT RAD MicroNeeds Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $220
MSRP
Crimson Trace CT RAD Micro ProNeeds Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $275
MSRP
Crimson Trace CT RAD ProNeeds Mount
3 MOA dot · Open
Requires: FN 509 Docter/Venom plate
≈ $297
MSRP
Crimson Trace CTS-1250Needs Mount
3.25 MOA dot · Open
Requires: FN 509 Docter/Venom plate
≈ $260
MSRP
Crimson Trace CTS-1550Needs Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $180
MSRP
EOTech EFLX Mini ReflexNeeds Mount
6 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $389
MSRP
Holosun 407C X2Needs Mount
Open
Requires: FN 509 Plate System plate
No offers yet
Holosun 407K X2Needs Mount
Open
Requires: FN 509 Plate System plate
No offers yet
Holosun 507C X2Needs Mount
Open
Requires: FN 509 Plate System plate
Buy · $290
OpticsPlanet
Holosun 507COMPNeeds Mount
Open
Requires: FN 509 Plate System plate
No offers yet
Holosun 507K X2Needs Mount
Open
Requires: FN 509 Plate System plate
Buy · $318
OpticsPlanet
Holosun 508T X2Needs Mount
Open
Requires: FN 509 Plate System plate
No offers yet
Holosun EPS CarryNeeds Mount
Enclosed
Requires: FN 509 Plate System plate
No offers yet
Holosun HE509T-RD X2Needs Mount
2 MOA dot · Enclosed
Requires: FN 509 Plate System plate
≈ $530
MSRP
Leupold DeltaPoint ProNeeds Mount
Open
Requires: FN 509 Plate System plate
No offers yet
Meprolight MicroRDS (Micro Red Dot + QD pistol adapter kit)Needs Mount
3 MOA dot · Open
Requires: FN 509 Docter/Venom plate
≈ $350
MSRP
Meprolight MPO PRO-F (Enclosed Emitter, RMR Footprint)Needs Mount
3 MOA dot · Enclosed
Requires: FN 509 Plate System plate
≈ $400
MSRP
Meprolight MPO PRO-S (Enclosed Emitter, RMSc Footprint)Needs Mount
3 MOA dot · Enclosed
Requires: FN 509 Plate System plate
≈ $400
MSRP
Meprolight MPO-F (Open Emitter, RMR Footprint)Needs Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $320
MSRP
Meprolight MPO-S (Open Emitter, RMSc Footprint)Needs Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $320
MSRP
Riton 3 Tactix MPRD (3 Tactix MPRD 3)Needs Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $350
MSRP
Riton 3 Tactix PRD (3 Tactix PRD 3)Needs Mount
2 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $350
MSRP
Shield Sights RMScNeeds Mount
Open
Requires: FN 509 Plate System plate
No offers yet
SIG Romeo ZeroNeeds Mount
Open
Requires: FN 509 Plate System plate
No offers yet
SIG Romeo1ProNeeds Mount
Open
Requires: FN 509 Plate System plate
No offers yet
SIG Sauer Romeo-X CompactNeeds Mount
2 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $430
MSRP
SIG Sauer Romeo-X Enclosed CompactNeeds Mount
3 MOA dot · Enclosed
Requires: FN 509 Plate System plate
≈ $600
MSRP
SIG Sauer Romeo-X ProNeeds Mount
2 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $480
MSRP
SIG Sauer Romeo2Needs Mount
2 MOA dot · Enclosed
Requires: FN 509 Plate System plate
≈ $800
MSRP
SIG Sauer RomeoZero EliteNeeds Mount
2 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $230
MSRP
Swampfox Justice IINeeds Mount
6 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $300
MSRP
Swampfox KingslayerNeeds Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $230
MSRP
Swampfox KrakenNeeds Mount
3 MOA dot · Enclosed
Requires: FN 509 Plate System plate
≈ $350
MSRP
Swampfox LiberatorNeeds Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $200
MSRP
Swampfox Liberty IINeeds Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $280
MSRP
Swampfox Sentinel IINeeds Mount
3 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $250
MSRP
Trijicon RCRNeeds Mount
3.25 MOA dot · Enclosed
Requires: FN 509 Plate System plate
≈ $699
MSRP
Trijicon RMR HDNeeds Mount
3.25 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $1,019
MSRP
Trijicon RMR Type 2Needs Mount
Open
Requires: FN 509 Plate System plate
Buy · $599
OpticsPlanet
Trijicon SRONeeds Mount
Open
Requires: FN 509 Plate System plate
No offers yet
Vortex Defender-CCWNeeds Mount
6 MOA dot · Open
Requires: FN 509 Plate System plate
≈ $250
MSRP
Vortex Defender-STNeeds Mount
Open
Requires: FN 509 Plate System plate
No offers yet
Vortex Venom (open emitter)Needs Mount
6 MOA dot · Open
Requires: FN 509 Docter/Venom plate
≈ $280
MSRP
Vortex Venom EnclosedNeeds Mount
6 MOA dot · Enclosed
Requires: FN 509 Plate System plate
≈ $350
MSRP
Vortex Viper Red DotNeeds Mount
6 MOA dot · Open
Requires: FN 509 Docter/Venom plate
≈ $250
MSRP

Suitability is general guidance based on the platform's typical effective range — not a hard rule. Your load, optic, and intended use may shift it.