6 Best Scopes For FN SCAR 17 & 20S [Updated 2021]

More and more better products are hitting the market, and here are the best scopes for FN SCAR 17.

Whether you're shooting close range or long-range, we have picked out a few options and separated them into 3 categories:

  • Close range
  • Medium range
  • Long-range

Let's see what these optics can do for your SCAR...

6 Optics People Love On Their SCAR17s

Aimpoint Micro - Toughest CQB Red Dot

fn scar 17 with aimpoint micro

Why Use The Aimpoint Micro - It's the best carbine red dot sights for its superior durability, battery life, and accuracy. If you use your SCAR for CQB distance applications, this sight is right for you.

Built like a tank - 7075 T6 aluminum housing protects external and internal components to survive rough handling, physical abuse, sharp recoil and retain zero.

Precise Aim - Hit a 100 yrd IPSC size target within a 2 MOA circle using the precise 2 MOA size aiming dot, just point and shot.

Insane battery life - The sight is always ready, and the user doesn't have to switch out the battery at all for 4+ years. 

CQB & Mid Range - Turn your SCAR into a CQB & mid range combat machine by adding a red dot magnifier behind it for more magnification


  • Magnification: 1X
  • Eye Relief: Unlimited
  • Reticle Type: 2 MOA Red Dot
  • Turret : 0.5 MOA / Click
  • Length: 3.1 inches
  • Weight: 4.7 oz

Holosun 507C X2 - Best Offset Canted Shooting

holosun 507c on valhalla tactical rukh offset mount

Why You Need An Offset Sight ? Transition between CQB and long range in no time. Driving the muzzle to target fast with a wide field of view on 1X!

Fast Sights Transition - Cant the rifle at an angle to use the red dot, and go back to the primary scope for long range shots.

offset scar 17 valhalla tactical rukh mount

Shoot Around Tight Corners & Barricades - Shoot around barricades, corners or any improvised shooting without worry about eye box restriction

Sight Always Stay On - This sight runs way past 50,000 hrs + solar fail safe that acts almost like a day time fiber optic to power the sight.

Superior Durability - Forged 7075 T6 aluminum housing unit divert impact force away from the lens, and it protects the internal component to retain zero from sharp recoil impulses and rough handling on shotguns, rifles and handguns.


  • Magnification: 1X
  • Objective Lens: 35mm
  • Eye Relief: Unlimited
  • Reticle Type: 2 MOA + 32 MOA Ring
  • Turret : 1 MOA / Click
  • Weight: 1.5 oz

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Trijicon ACOG 3.5X - Best Fixed Power Optic

trijicon acog on scar rifle

Why Use Trijicon ACOG 3.5X - The 3.5X ACOG is built just like any other ACOG scopes used in real world combat. The 3.5X model has much better eye relief distance for helmet wearing shooters, and this fixed magnification prism sight works very well for shooters with astigmatism.

Related Content: ACOG 3.5X vs 4X

Shock-Resistant Internals - Holds zero from 22LR to .50BMG and everything in between. SCAR recoil force will NOT break the scope.

Improved Eye Relief - Back off from the scope without seeing scope shadows, and have room if wearing a helmet

Built like a tank - Fully forged 7075 T6 aluminum housing protects internal components to survive rough handling, physical abuse, sharp recoil and retain zero.

Non Battery Powered Reticle - Glass etched Chevron tip reticle helps range known size target distance and provides a clean and precise aiming point. 

Aftermarket Mounts - Use any aftermarket SCAR rated ACOG scope mount from Geissele Precision, or LaRue to maintain zero.


  • Magnification: 3.5X
  • Objective Lens: 35mm
  • Eye Relief: 2.4"
  • Field Of View: 5.5°
  • Reticle Type: 7.62mm BDC
  • Turret : 0.33 MOA / Click
  • Weight: 14 oz

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Vortex Razor HD 1-10X - Best Do-It-All Optic


Why Get A LPVO ? LPVO can pretty much do everything that a red dot and a magnified optic can in one package. The RAZOR HD Gen 3 1-10X is mainly hitting targets up to 600 yards and also have the capability to go 1X without adding a secondary sighting system.

Now 10X Magnification - Bridged the gap between a mid-range LPVO with a long range precision scope without compromising size, clarity or field of view.

Fast 1X Target Acquisition - 3 inward arrows quickly draws the eye to the illuminated reticle center for CQB actions. 

CQB to Long Range - Transition fast between 1-10X for anyone shooting close and long-range targets.

Better Target ID - See clearly down range and aim with more precision at 10X than with a 1X red dot.

vortex razor 1-10x lpvo at 1x engaging targets

Range Target Fast - Quickly estimate the target distance as well as holdover and windage corrections simply by superimpose the hashmarked ranging subtension lines on the target.

Lifetime Warranty - You break it, Vortex will replace it at no cost with a lifetime, unconditional warranty. Even if it is not a original purchase.


  • Magnification: 1-10X
  • Objective Lens: 24mm
  • Focal Plane: First Focal
  • Tube Size: 34mm
  • Reticle Type: EBR 9
  • Turret : 0.25 / click
  • Length: 10.1 inches
  • Weight: 21.5 oz

NightForce ATACR 4-16X50 FFP - Best For Long Range

Nightforce optics on fn scar 20s long range
Image Referenced Larry Vicker

Why People Buy NightForce - The NightForce ATACR series scopes are top of line products generally marketed for military applications. If you need your 17" or a 20" SCAR rifle to hit beyond 600 - 800 yards. This is the best to get and the best to start learning to shoot long range with.

Mil-Spec Grade - 7075 T6 hard anodized scope body protects all scope internals from recoil and shock to maintain zero.

Instant Return To Zero -  No more counting or getting lost in the turret in the dark when dialing back to zero. Once the ZeroStop position is set, just dial until it comes to a stop without even looking at it.

True Reticle At Any Magnification - Whether 4X or 16X, the reticle subtension stays true for all magnification for accurate target ranging and hold.

Crystal Clear Glass - Aim and track your shot clearly through the lens for long range applications with an unclutter reticle center.

Capped Turret - The windage adjustment is capped to prevent accidental adjustments in the field.


  • Magnification: 4-16X
  • Objective Lens: 50mm
  • Focal Plane: First Focal
  • Tube Size: 34mm
  • Reticle Type: EBR 9
  • Turret : 0.25 MOA or 0.1 Mil / click
  • Length: 13.1 inches
  • Weight: 33.3 oz

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Leupold Mark 6 3-18X44 - Best For NV & Thermal

scar 20s with leupold mark 6
Image Referenced IRAQVETERAN8888

Why Buy This One ? - The MARK 6 3-18X is a more compact version of the Mark 5HD with just the right amount of magnification ideal for accurate drop-dead accurate shooting just like the NightForce ATACR above. It fits great on the SCAR 17 for range shoot and night vision setup. 

Night Vision & Thermal - Add any night vision or thermal adapter right in front the the compact scope for hunting and night shoots

DMR Optimized - Lightweight scope for SCAR 17 configured as Designated Marksmanship Rifle for shooting up to 1000 yards.

See In Low Light - Xtended Twilight Lens System gives shooter more of light transmission to still able to aim with the reticle during low light condition.

Wide Turret Travel - 34mm tube gives the shooter more click adjustment for hitting targets up to 1000 yards without the need of raised MOA mount


  • Magnification: 3-18X
  • Objective Lens: 44mm
  • Focal Plane: First Focal
  • Tube Size: 34mm
  • Reticle Type: Mil Dot
  • Turret : 0.25 MOA or 0.1 Mil / click
  • Length: 11.9 inches
  • Weight: 23.6 oz

Also Check Out: Best Riflescopes for 308

Best Optic Mounts For SCAR

best scar rated optics mounts

The SCAR rifle in the 308 platforms have soft perceived recoil but the gun's forward recoil impulse when its heavy bolt slams forward after a shot has been fired still poses the possibility for scope damage.

The best mounts that can handle all that recoil and protect your expensive optic are:

  • Leupold MARK 6 & NightForce ATACR- Sphur Precision Mount, Geissele Super Precision SOPMOD certified mounts [Rated For SCAR], Badger Ordnance 34mm scope rings. CHECK OUT: BEST 34MM SCOPE RINGS

  • Trijicon ACOG - Geissele Precision ACOG Mount with Keeper Nut [Built with 7075 T6 Aluminum provides 2800 lbs of clamping force + 4 recoil lugs for max rigidity & zero repeatability]

Additional Resources

If you didn't find what you were looking for, please check out these scope guides below:

Best Long Range Scopes For 6.5 Creedmoor

Best Long Range Scopes For 1000 Yard