MR556 A4

Heckler & Koch · Semi-Auto Rifle · 16.5″ Barrel · Optics-Ready

Caliber: 5.56 NATO / .223 Rem

Effective Range: Medium (~150–400 yd)

Drop chart: 5.56 NATO / .223 Rem

Compatible Optics

307 compatible optics in our catalog.

TypeMagnificationBudgetBrandFocal PlaneReticleIdeal MagnificationClose RangeDirect Fit Only

Showing 88 of 307

Prism scopes

Fixed low magnification with an etched reticle — astigmatism-friendly and still usable if the battery dies.

Athlon Midas Flare 3x30Direct Fit
Illuminated · BDC
≈ $350
MSRP
Athlon Midas Flare 5x30Direct Fit
Illuminated · BDC
≈ $400
MSRP
Burris AR-332Direct Fit
3x · 32mm · Illuminated
≈ $480
MSRP
Burris RT-3Direct Fit
3x · 34mm · Illuminated
≈ $299
MSRP
Primary Arms SLx 3x MicroPrismDirect Fit
23mm · Illuminated
≈ $330
MSRP
Primary Arms SLx 5x MicroPrismDirect Fit
36mm · Illuminated
≈ $380
MSRP
Swampfox SaberDirect Fit
5x · 36mm
≈ $327
MSRP
Swampfox TrihawkDirect Fit
3x · 30mm · BDC
≈ $350
MSRP
Trijicon ACOG 3.5x35 (TA11)Direct Fit
Battery-free · BDC
≈ $1,750
MSRP
Trijicon ACOG 4x32 (TA31)Direct Fit
Battery-free · BDC
≈ $1,700
MSRP
Vortex Spitfire HD Gen II 3xDirect Fit
Illuminated · BDC
≈ $350
MSRP
Vortex Spitfire HD Gen II 5xDirect Fit
Illuminated · BDC
≈ $450
MSRP

Magnified optics (LPVOs & scopes)

Variable or fixed magnification for reaching further out.

Trijicon VCOG 1-6x24Direct Fit
FFP · BDC
≈ $3,136
MSRP
Arken Optics EP-8 1-8x28Needs Mount
FFP
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $480
MSRP
Arken Optics LH-6 1-6x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $280
MSRP
Athlon Ares ETR Gen2 UHD 1-10x24Needs Mount
FFP · MIL/MOA
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $1,200
MSRP
Athlon Argos BTR Gen2 1-8x24Needs Mount
SFP · MIL/MOA
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $430
MSRP
Athlon Cronus BTR Gen2 UHD 1-6x24Needs Mount
SFP · MOA
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $900
MSRP
Athlon Helos BTR Gen2 1-4.5x24Needs Mount
SFP · MOA
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $400
MSRP
Athlon Talos BTR Gen2 1-4x24Needs Mount
SFP · MIL/MOA
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $200
MSRP
Burris MTAC 1-4x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $419
MSRP
Burris RT-6 1-6x24Needs Mount
SFP · MIL
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $479
MSRP
Bushnell AR Optics 1-4x24 (BTR-1)Needs Mount
FFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $280
MSRP
Bushnell AR Optics 1-6x24 (BTR-1)Needs Mount
SFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $330
MSRP
Crimson Trace Brushline Pro 2-7x32 BDCNeeds Mount
SFP · BDC
Requires: Scope rings (Picatinny → 1-inch Tube)
≈ $180
MSRP
Crimson Trace Hardline 1-6x24Needs Mount
SFP · MIL/MOA · BDC
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $320
MSRP
Crimson Trace Hardline Pro 1-6x24 BDC-COMPNeeds Mount
SFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $530
MSRP
EOTech Vudu 1-10x28Needs Mount
FFP
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $1,799
MSRP
EOTech Vudu 1-6x24Needs Mount
FFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,199
MSRP
EOTech Vudu 1-8x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,299
MSRP
Leupold Patrol 6HD 1-6x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,499
MSRP
Leupold VX-6HD 1-6x24Needs Mount
SFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,000
MSRP
Maven RS.2 2-10x38Needs Mount
SFP
Requires: Scope rings (Picatinny → 1-inch Tube)
≈ $550
MSRP
Maven RS.6 1-10x28Needs Mount
FFP · MIL/MOA
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $1,600
MSRP
Meprolight MVO 1-8x28 (M1 MRAD)Needs Mount
FFP · MIL
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $1,499
MSRP
Nightforce NX8 1-8x24 F1Needs Mount
FFP · MIL/MOA
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,800
MSRP
Primary Arms GLx 1-6x24Needs Mount
FFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $600
MSRP
Primary Arms SLx 1-10x28Needs Mount
SFP
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $600
MSRP
Primary Arms SLx 1-6x24 ACSSNeeds Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $300
MSRP
Primary Arms SLx 1-6x24 Gen IVNeeds Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $350
MSRP
Primary Arms SLx 1-8x24Needs Mount
FFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $480
MSRP
Riton 3 Tactix 1-8x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $510
MSRP
Riton 5 Tactix 1-10x24Needs Mount
FFP · MIL
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $960
MSRP
SIG Sauer Tango-MSR 1-10x28Needs Mount
FFP · BDC
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $1,900
MSRP
SIG Sauer Tango-MSR 1-6x24Needs Mount
FFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $380
MSRP
SIG Sauer Tango6T 1-6x24Needs Mount
FFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,500
MSRP
Steiner H6Xi 2-12x42Needs Mount
SFP · MOA
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,100
MSRP
Steiner M8Xi 1-8x24Needs Mount
FFP · MIL
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $3,000
MSRP
Steiner P4Xi 1-4x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $600
MSRP
Steiner T6Xi 1-6x24Needs Mount
FFP · MIL
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,500
MSRP
Swampfox ArrowheadNeeds Mount
1-6x · 24mm · SFP · MIL/MOA · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $469
MSRP
Swampfox Tomahawk IINeeds Mount
1-6x · 24mm · SFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $429
MSRP
Swarovski Z6i 1-6x24 (2nd Gen)Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $2,300
MSRP
Swarovski Z8i 1-8x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $2,800
MSRP
Swarovski Z8i 2-16x50Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $3,100
MSRP
Tract TORIC UHD 30mm 1-8x24 IRNeeds Mount
SFP · MIL/MOA
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $624
MSRP
Trijicon AccuPoint 1-6x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,100
MSRP
Trijicon AccuPower 1-8x28Needs Mount
FFP · MIL/MOA
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $1,699
MSRP
Trijicon Credo 1-10x28Needs Mount
FFP · MIL/MOA
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $1,800
MSRP
Trijicon Credo 1-8x28Needs Mount
FFP · MIL/MOA
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $1,400
MSRP
Trijicon Credo HX 1-6x24Needs Mount
FFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,338
MSRP
Vortex Razor HD Gen II-E 1-6x24Needs Mount
SFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,700
MSRP
Vortex Razor HD Gen III 1-10x24Needs Mount
FFP
Requires: Scope rings (Picatinny → 34mm Tube)
≈ $2,500
MSRP
Vortex Strike Eagle 1-6x24Needs Mount
SFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $400
MSRP
Vortex Strike Eagle 1-8x24 Gen IINeeds Mount
SFP · BDC
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $600
MSRP
Vortex Viper PST Gen II 1-6x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $800
MSRP
Zeiss Conquest V4 1-4x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $600
MSRP
Zeiss Conquest V6 1.1-6x24Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,100
MSRP
Zeiss Conquest V6 2-12x50Needs Mount
SFP
Requires: Scope rings (Picatinny → 30mm Tube)
≈ $1,300
MSRP

Magnifiers

Flip-to-side magnifiers that pair with a red dot.

Aimpoint 3X-CDirect Fit
≈ $596
MSRP
Aimpoint 3XMag-1Direct Fit
≈ $786
MSRP
Aimpoint 6XMag-1Direct Fit
≈ $1,487
MSRP
Athlon Midas M3Direct Fit
3x
≈ $250
MSRP
Burris AR-Tripler Gen 2Direct Fit
3x
≈ $359
MSRP
Bushnell AR Optics Transition 3xDirect Fit
≈ $180
MSRP
EOTech G33Direct Fit
3x
≈ $699
MSRP
EOTech G43Direct Fit
3x
≈ $599
MSRP
EOTech G45Direct Fit
5x
≈ $729
MSRP
Holosun HM3XDirect Fit
≈ $280
MSRP
Holosun HM6XDirect Fit
≈ $388
MSRP
Meprolight MMX3 (3x Micro Magnifier, flip-to-side)Direct Fit
≈ $330
MSRP
Primary Arms SLx 3x MicroDirect Fit
≈ $200
MSRP
Riton 3 Tactix 3XDirect Fit
≈ $230
MSRP
SIG Sauer Juliet3 3x24Direct Fit
≈ $250
MSRP
SIG Sauer Juliet4 4x24Direct Fit
≈ $290
MSRP
Vortex Micro 3xDirect Fit
≈ $300
MSRP

Thermal optics

See heat signatures — hogs and predators day or night, through brush and fog.

AGM Rattler V2 35-384Direct Fit
2-16x · 384×288 thermal sensor
≈ $2,000
MSRP
ATN ThOR 4 384Direct Fit
1.25-5x · 384×288 thermal sensor
≈ $2,200
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.