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

Manufactured by Primary Arms
SKU: PA1-8X24SFP-ACSS-5.56
MPN: 610029
Manufactured by Primary Arms
42 Reviews

In Stock

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

The popular 1-6x variable scope now features a total 8x magnification! Look through it and you’ll find the patented ACSS reticle combining bullet drop compensation, wind holds and moving target leads in one easy to use system. The second focal plane design is simple and strong. The ACSS reticle stays the same size regardless of power setting, so you'll need to crank it up to 8x magnification to use its advanced features. This scope is very fast and instinctive from 0 – 300 yards, and very precise from 300-800 yards.

  • Second Focal Plane ACSS reticle calibrated for 5.56/5.45/.308
  • Includes manual for zeroing with your caliber
  • 1-8x total magnification
  • BDC and ranging accurate at highest magnification setting
  • Red illumination with 12 brightness settings
  • Includes CR2032 battery
  • Single piece 6063 aluminum construction
  • water and fog proof
  • Fully multicoated lenses
  • Lifetime warranty

The brightness knob on the left side of the tube illuminates the center reticle through 12 brightness settings using the included CR2032 battery. This tough scope is waterproof, fog resistant, and covered by the Primary Arms Lifetime Warranty.
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Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Click Value1/2 MOA
Exit Pupil Diameter9.0mm at 1x, 3.0mm at 8x
Eye ReliefLow: 3.50 in / High: 3.30 in
Field View 100Low: 110.00 ft / High: 14.50 ft
Focal PlaneSecond Focal Plane
Length10.0 in
Magnification1X - 8X
Night Vision CompatibleNon-Compatible
Objective Diameter24mm
Optic SeriesSLx
ReticleACSS 5.56/5.45/.308
Reticle ColorRed
Reticle TypeBDC
Tube Diameter30mm
Turret FeaturesCapped Turrets, Low Profile, Finger Adjustable
Weight16.9 Oz
  • Learn More About The Primary Arms SLx 1-8x24
  • 1-8x SFP ACSS Unboxing by Hijack86
  • 1-8X24 ACSS Preview by Eddy's Guns
  • 1-8x24 Ranging and Use by Brent0331
  • Sootch00 reviews the 1-8x24 ACSS 5.56
  • MrGunsNGear Reviews the SLx 1-8FFP Raptor Rifle Scope
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

42 reviews


Overall great buy.


Good illumination, from very dim to daylight bright. Good detents on the illumination dial. 1x great image, no distortion or fish eye, good eye box. 8x slightly blurry, eye box is small but usable. Decent windage and elevation detents, passed box test. Hoped for better image on high magnification. Great optic for the money.

This optic is great for the price point.


I have this optic on a .308 AR Platform. I haven't had the opportunity to use this optic at more than 100 yds. but I love the Chevron apposed to the Dot that my old PA1X6 ACSS had. I also love the added magnification. I just need to get out to 500 - 800 yds. and really see what this scope can do.

A stand up company.

by -

This is a great scope with a fantastic reticle for a good price. I got the scope in 8/16 and the target image was blurry. I diagnosed the problem for a month in different shooting conditions, mounts, rifles, even had a eye exam. Nothing changed. Called up PA told them what was happening. They said send us the scope to check out. Few days later the where send me a new scope. This 2nd scope was prefect. PA handled everything right way and went above all expectations. They took care of me. Thank You Primary Arms. I will be buying more of your products. You have earned my business. Thank You again.

Awesome scope


This is an excellent scope, well above it's price point. I've had several Primary Arms optics prior to this one, and they continue to improve with each new product.
Overall the scope is great. The glass is crystal clear, the scope feels solid and durable, illumination is bright, and the reticle is freakin awesome. Would definitely recommend.

Just Buy One


Pulled the trigger on one of these on a Wednesday and had it at my door on Friday by 9:00 AM. One hour and ten shots later I was zeroed at 100 yards. Positive sure clicks with corresponding reticle movement of 1/2" moa. Good eye relief on all power settings and very nice glass. I have no real complaints with it. This thing will be riding patrol on a little 16" precision carbine I built.

I have had a 1-6 for a few years now. Good scope all around save some edge blurring on 6 X but a good sound optic. It has been through a number of pretty intense LEO training courses

Keep up the good work Primary Arms with your killer scope designs, your fast sure shipping and good prices. Mighty glad to have you guys as my one shop stop!!

Crazy value for the money!


Crazy value for the money! Fast target acquisition at 1 - 3x. Precision shooting at 6-8 hundred yards. What more do you want?! I personally shoot it sub 300 yards with AR-15 platforms, but having the extra magnification is only bonus. Lens quality is superb on my scope. I have zero blurriness at x8. However, even if i did it I'd still would rate it 5 stars due to its price. You basically got a red dot (short range target acquisition with the horse shoe) and long range capabilities with the extra 8x magnification. It's worth the money!

Killer Scope


I picked one of these up from PA got it quickly as always from PA and the quality and look are stellar. The chevron is smaller than I thought it would be but usable for me I love the range finder built in on the right side. Killer product worth every cent.

Heavier than advertised


Performance-wise the scope seems great. 1x seems very close to true 1x depending on eye relief. Clarity/eye relief at 8x were not problematic to me as mentioned in some previous reviews but then I was bench shooting and not moving around. I was shooting out to 600 yards and the BDC wasn't far off with a 16 inch 5.56 AR and cheap 55gr Wolf Gold. One thing I have not seen in any other review is that this scope weighs 18.1 ounces on my scale not the advertised 16 ounces. This may not seem like a big deal but it was one reason I grabbed this scope instead of the highly regarded 1-6x ACSS advertised at 17.6 ounces. Have never weighed a 1-6x to confirm weight but the thought of getting more zoom for less weight was appealing. From PA: Thanks Damian. We had weighed without battery or caps. We are updating our specs to proper weight.

Not their best


but pretty goodI wrote an earlier review that there was some slight fuzziness or blurring around the edges on background objects when the scope is adjusted to it's maximum magnification but that you can work around it. It's only slight and not that bad. It is a good scope though. Good enough that I bought another one. I liked the ACSS reticle the clear and bright glass that you can see out of at it's lowest magnification 1X and on up until you reach 8X magnification where there is some slight blurring. I like the adjustment knobs because they are knurled and big enough to grab onto to make your adjustments without any special tools. Plus they have a moveable scale on them to show your adjustments. The scope is very durable in it's construction. You can tell when you hold it in your hand by it's heft or weight. I like the look of it and that it has lighted optics as well. I got the 3 gun stuff cat tail scope lever for the adjustable magnification ring because it is a little hard to turn if your hands become sweaty. Once sighted in I was able to shoot a 20 round box of ammo thru the bulls eye at 100 yards with all the holes touching each other or thru the same hole.

Primary Arms SFP 1-8


I have the PA 1-8 SFP mounted to my 16 in. Bull barrel AR-15. Quality is on par with the 1-6 but the additional 2x is a big plus for me. Noticeable fisheye @ 1x but workable and gone @ 2x. Low illumination is very very low (a good thing) and highest setting is daylight bright. About the reticle... The good: all of the good things you've read about the 1-6 acss apply. The bad: For me I don't like the chevron as much as I thought I would. It's very small and using the tip for 100 yd zero and base for 200 yd zero per the instructions just didn't work well for me. I figure the chevron represents only about 1.5 inches high @ 100 yds. My workaround: I zeroed @ 300 yds using the 300 yd mark on the BDC. Now the tip of the chevron is good for 50-200. Works great. All in all this is a nice scope and the only entry level 1-8 on the market right now.