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Primary Arms SLx6 3-18x50mm FFP Rifle Scope - Illuminated ACSS-HUD-DMR-308

MPN: 610037
Manufactured by Primary Arms
4 Reviews


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Available for Pre Order/Back Order ETA: April

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The Silver Series optics are the heart of our lineup. The trusted optics that have built our reputation through the years. Although many SLx optics will be familiar to Primary Arms fans, we are always pushing forward with new generations and adding even more options in response to the demands of our loyal customers.

The Primary Arms 3-18x50mm first focal plane illuminated rifle scope punches far outside of its weight class. At 3x magnification, fast snap shots at close range are a breeze with the daylight bright illuminated reticle, but the scope easily allows shooters to reach the 1,000 yard line when cranked up to the full 18x available at the top end. To make the best of the reticle at every magnification, it has been etched into the first focal plane. This allows it to be 'true' at every magnification, allowing the ranging, hold overs, and wind holds to be used as long as you can see them.

  • First Focal Plane reticle is true at every magnification
  • Partial reticle illumination of the horseshoe and chevron is daylight bright
  • ACSS HUD DMR 308 Reticle provides moving target holds out to 600 yards, as well as ranging, bullet drop, and wind holds out to 1,000 yards
  • Calibrated for .308 Winchester
  • Chevron central aiming point provides infinitely small aiming point
  • Replaceable power ring fin can be positioned to user preference
  • Locking, Zero resettable turrets
  • 30mm main tube
  • Includes Butler Creek flip up scope covers
  • Objective: 43
  • Eye: 19
  • Weight: 25.4 oz. with battery, without lens covers
  • Water proof, fog resistant, shock resistant
  • Lifetime warranty

The 3-18x50mm is equipped with the ACSS HUD DMR 308 reticle, the most advanced moving target reticle in the world. Capable of guiding the shooter to first shot hits on moving targets out to a never before seen 600 yards, HUD DMR even accounts for three different target speeds. You can't hit any target if you don't know how far out they are, so HUD DMR takes the guess work out of range estimation. The integrated ranging system quickly and accurately provides target ranging, wind holds, and bullet drop compensation out to a full 1,000 yards. Tuned for common .308 Winchester loads, this reticle can be used with some .223 Remington loadings as well.

The 3-18x50mm scope body is our most advanced to date, offering new innovative features, as well as old favorites. A removable and replaceable fin on the power ring allows for rapid adjustment of the magnification range just like a throw lever, with placement of the fin entirely at the discretion of the operator. The improved turrets have tactile and audible 0.1 MIL click adjustments, as well as offering easy reset once you've zero'ed your rifle, and secure locking to prevent accidental knob turning. The illumination turret offers six settings with an 'OFF' setting between each for fast switching to your preferred setting. A smooth parallax adjustment and fast focus eye piece work together to provide a perfectly crisp image of the target and reticle.

Featuring clear glass, forgiving eye relief/exit pupil characteristics, and efficient industrial design, the 3-18x50 FFP Scope with ACSS HUD DMR reticle is backed up by the Primary Arms Lifetime Warranty.


Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Click Value0.1 Mil
Exit Pupil DiameterLow: 16.20 mm / High: 2.70 mm
Eye ReliefLow: 3.90 in / High: 3.50 in
Field View 100Low: 36.70 ft / High: 6.10 ft
Focal PlaneFirst Focal Plane
Maximum Magnification18
Minimum Magnification3
Night Vision CompatibleNon-Compatible
Objective Diameter50mm
ReticleACSS HUD DMR .308
Total Elevation Adjustment14.5 MIL
Total Windage Adjustment14.5 MIL
Tube Diameter30mm
Turret FeaturesExposed Turrets, Tactical / Target Profile, Finger Adjustable, Locking, Zero Reset
TypeVariable Magnification
Weight25.4 Oz
  • CountryMash demonstrates a tracking test with PA 3-18x50
  • Dimitri and Robski shoot the 3-18x50 at long range
  • Robski reviews the 3-18x50 HUD DMR 308
  • Kotaboy tests 3-18x50 turret tracking with 6.5 Grendel at long range
  • CountryMash Reviews the .308 ACSS HUD DMR Reticle
  • CountryMash Reviews the 3-18x50mm FFP ACSS HUD

Ratings & Reviews

4 reviews

  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

I love it

by -

I use this to hunt and it works fantastical! I love I can adjust shots in a stand without messing with turrets and the fact they lock makes me not worry about zero loss.

Scope is good but can only compare to lower priced options.

by -

Scope is a decent upgrade over the 4 - 14x scope line, which is also a great scope for the price. I dont personally dial the turrets so cant speak for the tracking but it zeroed just fine and has held perfectly. Only have cheaper scopes to compare to such as the PA 4-14x and the Athlon Argos.

Very Good (for the price), But Not Great...


My first comment would be: This isn't close to being a Platinum... <br><br>(I have 2 to compare it to.)<br><br>My optic is a bit foggy at 18...<br>My turrets are a bit mushy...<br>(I don't plan on using turrets with this setup so who cares?)<br><br>But, the reticle is OUTSTANDING!<br><br>I put this on a RAR .308 that's in a Magpul Hunter American stock... Pulled out some 175g GMM clones... Felt comfortable with my Zero after 4 shots... Took it to 500...ding...took it to 600...ding...took it to 800...ding...took it to 1000...ding...<br><br>BTW, you have to dial down to 14-15 to see the reticle at 1000.<br><br>Looking forward to playing the Unknown Distance Game with this setup. <br><br>Also looking forward to putting one of the 6.5 reticle versions on my AR...<br><br>Way too much fun!

Amazing Optic!!!

by -

This is absolutely the best optic for the money in its category. The ACSS reticle, in my opinion, is the best reticle out there.... Dimitri is a wizard! You won’t find quality, clarity and this level of performance on any other optic at this price point and with a lifetime warranty. Thanks again Dimitri for answering all my questions.