Primary Arms SLx 1-6x24mm SFP Rifle Scope Gen III - Illuminated ACSS 5.56/5.45/.308

Manufactured by Primary Arms
SKU: PA1-6X24SFP-ACSS-5.56
MPN: 610017
Manufactured by Primary Arms
88 Reviews

In Stock

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After rigorous field testing, this optic has been given a Silver-tier rating by the National Tactical Officers Association.

This rifle scope is part of our SLx optics line. SLx optics built our 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 1-6x24 second focal plane scope (Gen III) features our exclusive, patented Advanced Combined Sighting System reticle. Bullet drop compensation, wind holds, moving target leads and range estimation are seamlessly integrated into an easy to use, instinctive sighting system that is very fast from 0-300 yards and very accurate from 300-800 yards. The second focal plane design keeps the reticle the same size at all magnifications for quick acquisition at low power and advanced reticle functionality at 6x maximum power. This Scope is protected by the Primary Arms Lifetime Warranty. If a defect due to materials or workmanship, or even normal wear and tear, has caused your product to malfunction, Primary Arms will either repair or replace your product.

  • Silver-rated by the NTOA!
  • Second Focal Plane ACSS reticle designed for 5.56/5.45/.308
  • Includes manual for zeroing for your caliber
  • Chevron center provides infinitely small aiming point
  • BDC and ranging accurate at highest magnification setting
  • 1-6x total magnification range
  • Red illuminated with 11 brightness settings
  • Includes CR2032 battery
  • Single piece 6063 aluminum construction
  • Water and fog proof
  • More compact than older models
  • Hardcoat anodized matte black
  • Lifetime warranty

We knew our flagship Gen II 1-6x24 would be a tough act to follow, so we worked hard to make incremental but real improvements. The Gen III is 18mm shorter (10.04in long), weighs 1.88 ounces less (16.9 oz. total), and has an additional 10 MOA of internal adjustment compared to the older model. The ACSS® reticle has also been improved, now featuring a chevron center aiming point rather than a dot. 

Partial 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. All lenses are fully multicoated for maximum light transmission and the 6063 aluminum body is Type II hard anodized in matte black.
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Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Click Value1/2 MOA
Exit Pupil DiameterLow: 9.00mm / High: 4.00mm
Eye ReliefLow: 3.50 in / High: 3.30 in
Field View 100Low: 110.00 ft / High: 19.30 ft
Focal PlaneSecond Focal Plane
Length10.0 in
Magnification1X - 6X
Night Vision CompatibleNon-Compatible
Objective Diameter24mm
Optic SeriesSLx
ReticleACSS 5.56/5.45/.308
Reticle ColorRed
Reticle TypeBDC
Tube Diameter30mm
Weight16.9 Oz
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WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

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

88 reviews

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I love this thing. All around great scope. It was between this and the Vortex Viper PST, which costs twice as much. I decided on this because i really liked the reticle. Glass is really clear. Illumination is brighter than my red dot. Very glad I waited for it to come in stock. All the reviews are spot on

Outstanding LPVO

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Paired this scope with the Aero Precision Ultralight 30mm Scope Mount - Extended, and they go together like peanut butter and jelly. This optic is a fantastic optic at the price. The optic itself in your hands feels sturdy and like it can take a beating. The brightness can be turned up to "Help me, I'm blinded" and also comes with 2 batteries (win!). The turrets are pretty decent, not mushy by any means, but are pretty decent when it comes to adjusting them. The magnification adjustment is a little tight to move, but that’s a good thing in my opinion. I will say, it would be nice for them to put a quick adjust on there so you have something to grab when adjusting you magnification. I was beyond amazed with the eye relief on this, if you get a black eye with this, you're wrong. The glass clarity is again outstanding for the price point and is very clear. The scope comes with 2 scope caps and a life time warranty. This is a great LPVO!

Excellent Scope If Used Properly


I bought one of these from PA just as the Gen III started coming out. Great glass for a good price. I've noticed a few complaints online about the BDC not being correct. This scope must be at 6X for the reticle to be accurate. It's in the instructions. That'll solve those BDC issues.

Combat Reticle

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I really like this scope it allows me to maximize the full use of my rifle range as well as engaging close in targets like a Red Dot. The combat reticle is superior to most, for the price and quality you won't get any better and I totally enjoy this product.

Just buy it!

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This is a fantastic scope for the money….yeah everyone says that but if you’ve read the other reviews their on point. I haven’t had any bench time with this thing to fine tune it yet. It was zeroed starting at 25 yards working our way back to 150 suppressed and wow! I know the point of impact will change or it should unsuppressed. My bolt gun with the same suppressor didn’t but back to this! The only slight knit pick I have is at 1x the view seems slightly fish eyed, but again I don’t have the dioper set perfectly. The instructions will guide you on this process but this is mainly a me thing and don’t let that take anything away from what this is and can do. I don’t regret my purchase at all I just need more time with it and some match ammo down range. I was using standard 55 grain imi when the zeroing was performed with a knarly wind at our backs and shooting offhand.


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As always PA is the best. Love this LPVO. After zeroing it. This thing is top natch. Trued it at 300 yds and bcd is spot on. Why was money paying for 1400 plus dollars on something when you can get this and save your money to get ammo. Just saying.


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I haven't had a chance to use it much yet but so far I like it. After a couple hundred rounds I really like the light weight, the reticle and the scopes ability to hold zero.

Great scope

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Very clear and nice quality

Great scope with a great reticle

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My son talked me into getting a primary 1 (411) 100-006 arms scope and I’m glad I did. This scope is built really well and works flawlessly. I used the Trijicon ACOG with the ACSS reticle while I contracted overseas and loved it and when I found out that primary arms had the same reticle in a 1x6 scope that made my day. This scope is great for any AR platform and the service I received from Primary Arms was absolutely amazing

Great Glass & Love Reticle

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<br>Good Glass
<br>Not true 1x, but pretty damn close
<br>Need to get pretty consistent eye relief, but true for most magnified optics
<br>Overall: def recommend, great value