Primary Arms SLx 1-8x24 FFP Rifle Scope - Illuminated ACSS Raptor Reticle - 5.56 / 5.45 / .308

Manufactured by Primary Arms
SKU: PA-SLX8-1-8X24F-RAPTOR-5.56
MPN: 610098
Manufactured by Primary Arms
46 Reviews

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This Primary Arms rifle scope is part of the SLx optics line. SLx optics have built a reputation for innovation, reliability, and value. All SLx optics undergo rigorous field-testing during development to best serve you in any environment.

The Primary Arms SLx 1-8x24 first focal plane (FFP) rifle scope offers an expansive magnification range with an eight-time zoom ratio in a compact, lightweight, and affordable package. This tough low power variable optic (LPVO) features full red reticle illumination, a quick focus eyepiece, and low profile, finger adjustable turrets topped by the new turret caps. The first focal plane construction allows for a small red-dot style reticle at low magnification for quick close-quarters engagements, without sacrificing the features and accuracy of the popular Advanced Combined Sighting System (ACSS®) reticle system when you bring the magnification up. To get you from 1x to 8x and back, the SLx FFP rifle scope features the moveable and replaceable magnification ring fin. To top it all off they are backing this scope with lifetime warranty!

  • 8x magnification range
  • First focal plane ACSS® Raptor reticle designed for 5.56/5.45/.308 is true at every magnification
  • Excels at close quarters out to mid-range engagements
  • Fully multi-coated lenses
  • Tactile and audible 1/4 MOA click adjustments
  • Low profile capped turrets
  • Water proof and fog proof
  • Moveable and replaceable magnification ring fin
  • Weighs just 17.9 Oz!
  • Lifetime Warranty

The ACSS® Raptor 5.56 first focal plane reticle has been calibrated to be true at every magnification. The reticle's features include automatic ranging out to 600 yards, moving target leads, and a large, fast horse shoe that easily draws your eye to the target. This caliber specific reticle is tuned for 5.56 NATO, 5.45x39mm, and .308 Win. Full red reticle illumination is provided by a single (included) CR2032 battery, and a spare battery is included inside the windage turret cap. A total of 11 settings take the reticle all the way up to daylight bright. At 1x you get a fast reticle optimized for engaging targets in close quarters. At 8x you have a precision reticle that will let you easily reach out to 600 yards!

Whether you're hunting through the brush or looking to crush the competition, the SLx first focal plane low power variable rifle scope with ACSS® Raptor reticle is an excellent choice. The wide 1-8x magnification range offers the perfect combination of close quarters engagement speed with mid-range precision, ensuring no target is out of your reach. Lightweight at just 17.9 ounces and backed by the 100% in-house inspection and lifetime warranty, it's the perfect option for your favorite carbine.
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Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Click Value1/4 MOA
Exit Pupil DiameterLow: 9.00 mm / High: 3.00 mm
Eye ReliefLow: 3.20 in / High: 3.30 in
Field View 100Low: 105.00 ft / High: 14.30 ft
Focal PlaneFirst Focal Plane
Magnification1X - 8X
Mount Compatibility30mm
Night Vision CompatibleNight Vision Compatible
Objective Diameter24mm
Optic SeriesSLx
ReticleACSS RAPTOR 5.56/5.45/.308
Reticle ColorRed
Reticle TypeBDC
Tube Diameter30mm
Turret FeaturesCapped Turrets, Low Profile, Finger Adjustable
Weight17.9 Oz.
  • Dimitri Discusses the 1-8x FFP SLX with ACSS Raptor Reticle
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

46 reviews


Slx 1-8x24 FFP Review


I think the glass is very good for its price point, it exceeded my expectations. I agree that 1x is probably more like 1.1x, that isn’t an issue for me. On day light bright, it's not red dot bright, but I do not use an illuminated optic in bright day light sun. In all other conditions the horse shoe reticle is bright enough. The majority of my range time was spent between 500 and 625 yards. At 8x I did not notice any edge distortion or CA, however, I wasn’t focusing with the edge. The scope had good clarity and the targets were sharp. I also thought that the eye box was bigger than I expected. Once I had dope for the ammo I was using, I was able to hold elevation, starting from 300 yards out to 625 yards, achieving hits on steel plates. The ACSS Griffin X Mil reticle is great, that and the fact that it is FFP, is the reason I purchased it. Really my only complaint is that the diopter doesn't have a lock ring and turns easily, other than that it's a great scope for the money.

Good overall Value


The good
Clear glass
Nice reticle
Well built
Caps included

The Bad
Eye box at 6-8x is horribly tight
Edge distortion
Clarity and light transmission falls off at 4x

Overall a good value for the money but doing 8x at this price point may be a bridge too far.

At this price point there had to be trade-offs made, but there are other scopes in this price class without such a horribly tight eyebox.

4 stars regardless because of the overall value.

Dependability with or without a battery

by -

Performs like a red dot and reaches out for rifle distance performance. Battery is taken out of the equation if it fails.
I have two and if it was financially practical I switch all my AR's from red dots to the Primary Arms SLX1x8x24ffp👍

Good for the hood

by -

Not a bad little scope. High dollar value but cheaper made. Tracking is ok. Clicks are crisp. I would change a few things if I but good at the price point. Wish it had better turrets but for the price it will work. NOT FOG PROOF IT WILL FOG



The real point of a LPVO is to have the ability to essentially have a red dot sight and a scope in one unit. For an LPVO to work like that, 1x really needs to be zero magnification with no distortion (fish eye, fish bowl, whatever you want to call it). Otherwise, using the scope both eyes open is very difficult.
This scope has enough distortion and magnification at the 1x setting that, in my opinion, it's not a proper LPVO.
However everything else about this scope is of great quality for the price.


by -

Very clear and quality lpvo for the money. The reticle is fantastic and the brightness levels suffice for what is needed.

Exactly what I was looking for

by -

Beautiful scope. Very fast target acquisition at 1x. Love the Raptor reticle. Illumination bright and clear. Very impressed and will absolutely be shopping Primary Arms for my other rifles.


by -

First LPVO I’ve owned. Did a lot of research before picking this one. Not disappointed one but.

Surpassed all my expectations

by -

I wasn’t sure what to expect at the one by eight at this price. As soon as I open the box I grabbed the scope and could immediately tell it was high-quality. I put it up to my eyes and went straight to eight times magnification. Much to my surprise it was crystal clear and easy to see the reticle. It also looks awesome on my scar 17. Couldn’t be happier once again primary arms hit it out of the park.

Gets the job done!

by -

I use this optic on a 6.5 Grendel to deer hunt. This optic is meant for quick acquisition of a target. Not the best glass. But you can beat the price. I put my money into the barrel. Also purchased from this site. Combine that with good ammo and I shoot sub MOA at 100 yrds. If you want an optic that gets the job done and does not cause you to go into debt, this is your choice.