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
95 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

95 reviews

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  • 1 star
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Great scope


Finally had a chance to take it out today, glass is clear. The illumination is fantastic, within a couple shots was finally hitting the target with every shot. With more practice I’m sure I can get my groupings closer together but I am happy to now be able to hit a head size target from 100 yards every time. Great optic for the money! I paired mine with a Burris scope mount from here too and that also matched up great and holds it snug to my rifle

Outstanding optic for the price!


This scope is excellent for the price. On 1 power it’s field of view is quite impressive and the reticle is very large, making it very fast to acquire. The glass is clear with very little distortion around the edges, the reticle is crisp and easy to use, and the chevron aiming point is far better than just a dot. The adjustment knob is very smooth, and feels like it is good quality. <br><br>My friends and I have tested the ACSS BDC out to 600 yards with 55gr and it is almost spot on. I am not a fan of BDC reticles because they almost never true up, but this reticle is not only fast, great for range estimation, it truly is spot on with a 16” barrel and 55gr 5.56. It is very impressive and offers unmatched quality and capability for the money. This optic put in an aero precision 30mm SPR aluminum mount is inexpensive and can rival the capability that top tier LPV optics give you.

Nice scope

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5 stars. This is a super nice scope and worth it. Add a 45-degree site for up close and personal and you got a great combo. BDC is by far the best choice for any 5.65 weapons. Every person should have one. This should be standard issue. My primary arms items are growing daily.

just the thing

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the 1-6 is good for me because it it fast and I don't have to contend with the starburst I get with a red dot. I am pleased with the concept and value.

Buy it already

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I looked at this scope about a million times before I took the chance and ordered it. Don’t be like me, just order it. This thing is top notch. Crystal clear and reticle is crisp and easy to use. The 11 brightness settings are awesome for being able to adapt to any light level. I love all the features of the ACSS reticle system as well. You won’t regret this scope!


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Very pleased, its everything it was supposed to be, very clear and crisp.

Excellent.308 Scope!

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I had a tough decision between this PA scope or strike eagle 1 x 6.
<br>I decided to go with the PA and I am happy I did. After mounting on my Savage AR-10, I have absolutely no regrets.
<br>Hitting 1/2” groups @100yds consistently.
<br>Love the reticle!

Great Optic/Scopte

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I first saw The Daily Shooter do a (YouTube review on the different optics you can choose for an AR build. I decided to use this scope for my first AR build because it seemed like a great all around optics, great quality and a reasonable price! I have been really happy and would highly recommend it to anyone for an all around optics!!!

Very nice scope!

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This is my favorite scope so far!

This that good Shit


Its perfect