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Primary Arms SLx 3X MicroPrism™ Scope - Red Illuminated ACSS Raptor Reticle - 7.62x39 / .300 BLK - Yard

Manufactured by Primary Arms
MPN: 710040
Manufactured by Primary Arms
21 Reviews

In Stock

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This Primary Arms MicroPrism 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 SLx 3x MicroPrism is an all-new advanced optical system that combines the compact, lightweight size of a microdot with the durability and precision of a 3x magnified optic. The SLx 3x MicroPrism offers 13 illumination settings with AutoLive® motion-sensing on/off technology and multiple night vision compatibility options.

Weighing under 8oz, the SLx 3x MicroPrism is smaller and lighter than many red dot sights and features crystal-clear glass with 3x magnification for improved precision at distance. Even in close-quarters, the optic’s wide field-of-view and forgiving eye relief make it easy to snap on target.

Because the SLx 3x MicroPrism uses an etched reticle with adjustable diopter, the user will always have a clear, crisp reticle image, even if they have severe astigmatism. When set to max illumination, the MicroPrism reticle is fully daylight bright. For low-light, this optic offers 3 different NV-compatible settings, accommodating any ambient light level. Paired with the AutoLive® motion-sensing illumination technology, this optic provides an exceptionally long runtime at any brightness setting.

This package also includes the new ruggedized mounting system with industry standard mini-prism footprint, guaranteeing reliability and zero retention through heavy use and adverse conditions. Out of the box, this mount can be set for 8 different mounting heights and configurations, ensuring compatibility with any rifle system.


  • 13 Illumination settings + 3 NightVision; Highest settings are Daylight Bright
  • AutoLive motion-sensing on/off battery saving technology
  • Length: 2.95” Weight: < 7.95 oz.
  • Etched Reticle, perfect answer for astigmatism and works without illumination
  • Wide Field of View (38.0 ft @ 100 yds), excellent for CQB situations
  • 80 MOA W/E Adjustments; .25 MOA Click Value
  • 8 Mounting Height Options (incl. AC & L1/3 heights, see next page for details)
  • Uses One CR2032 Battery (Included)
  • Up to 29,000 Hours on medium setting
  • Industry Standard Mini Prism Mount Footprint
  • Eye Relief: 2.7"
  • Lens Covers also included; ARD option sold separately
  • Lifetime Warranty

The ACSS® Raptor 300BO/7.62x39-YP reticle is part of the patented ACSS Reticle series.

The Advanced Combined Sighting System (ACSS®) is a high-performance reticle solution to the challenges of modern marksmanship, distilling complex mathematics into intuitive holdovers that enhance your speed and precision. Each ACSS reticle is specially designed to outperform in real-world applications, incorporating a mix of tools to deliver instant firing solutions. These tools may include ballistic drop compensation, auto-ranging stadia, wind holds, moving target leads, or an infinitely-precise center chevron.

The ACSS-RAPTOR-7.62x39/300BO-YP brings the same features as the 5.56/.308 reticle, except the holdovers match 7.62x39 and .300 AAC Blackout ballistics. At close range, users can rely on the bold outer horseshoe and infinitely precise center chevron for fast and accurate target acquisition. As range increases, users can use the auto-ranging ballistic holdovers and accompanying 5-mph and 10-mph wind holds, which are set in 100-yard increments.

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Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Click Value1/4 MOA
Eye Relief2.70 in
Field View 10038.00 ft
Focal PlanePrism Scope
Manufacturer.Primary Arms
Mount CompatibilityPrimary Arms MicroPrism, Trijicon Mini-ACOG
Night Vision CompatibleNight Vision Compatible
Optic SeriesSLx
ReticleACSS RAPTOR 7.62 Y
Reticle ColorRed
Total Elevation Adjustment80 MOA
Total Windage Adjustment80 MOA
Turret FeaturesExposed Turrets, Low Profile, Tool Adjustable
Weight7.95 Oz.
  • Product Showcase: 3X SLx MicroPrism
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 www.P65Warnings.ca.gov.

Ratings & Reviews

21 reviews


Wow, you guys hit the sweet spot with this one.

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I mounted this optic on a 7.62x39mm AR build that I have, that is very accurate. I had a SLX 1x on the rifle and wanted to reach out a little farther with my old eyes. Well smacking an 10 inch plate 260 yards away is great fun with cheap imported ammo. The size difference between the 1x and this 3x is almost nothing. It's amazing how small and light it is. The glass is very clear and I really like the reticle, very sharp. The ACSS reticle works very well with the 7.62x39mm. The old SLX 1x will go on another AR. The one issue I have is, now I need to buy more of them....



Blown away at the quality of optic you get for the price. I have astigmatism so red dots are not an option and this reticle is crystal clear. This thing is just amazing, from the size, the reticle, aesthetic etc. It's near perfect for me.
I ordered on a sunday night and received my optic on tuesday afternoon. Thanks PA for providing rhe community with such great, affordable optics.



Scope is Small, light, ultra clear w/diopter. Adjustability of height & degrees allows you to get the perfect height for cheek-weld,. Eye box is better than expected for its size.Extremely fast target acquisition. Very easy to zero. Illumination daylight bright. Checks all boxes that other optics of this caliber don't. The optic itself gets (5 Stars)
Ranging slots and dots are harder to see than on other PA products. Illuminating it wouldn't hurt. (3.5 stars).
EXTREMELY HARD TO TURN illumination dial. I'm literally needing to wrap a fabric around my dial and turn it with a plier.
Wouldn't recommend for LEO use on this alone.
(1 stars) For now, it'll be better for casual or sport shooting.

Pretty Impressed

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762x39/300AAC model

1k char limit here is, limiting

Solid feel. Impressive field of view, good image quality, reticle design, compactness, low weight, and hopefully durability. Ocular bezel almost disappears. As with 4X TA31 ACOG, there is a blur to one side of image, inherent with prism scope design - no issue. Stated eye relief accurate. Eye box good not great. Making this work with full-aft BUIS means a little compromise.

Illum dial is indeed "mushy,” but peripheral vision ok(RH shooter). Precise reticle etching. Wanted vertical ranging ladder, but various BDC stadia line intervals substitute to 600yds. Subsonic markers would be nice.

Diopter firm, doesn't alter target alignment. Low-light transmission marginally better than naked eye. ARD advised, allows 02A Butler Creek flip cap for occluded eye (OEG) functionality w/medium illumination, good on fixed mag prisms and RDS for effective CQB aiming.

Recommended for lightweight builds.

A great optic for your AK platform rifle

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This is a great choice for your AK. I have a Zastava M70 along with the Zastava mount that slides into the channel on the left side of the receiver. The brightness options and the clarity of this is beautiful. The design of the chevron as well is very useful. Make sure to read the manual why.

Solid 9 Out of 10 Clear Glass


Zer0ing this is quite easy and the BDC drops out to 300 yards for 7.62X39 with 16 inch barrel are dead on. For a $320 optic, the glass quality is very good. Of course if you want Trijicon, you will have to pay 3-4X as much. Others with the 5.56 inch version of this say it is quite rugged and the quality of this one seems the same. I have the previous SLX 3 larger version of this as back up. The only thing missing is the standing range estimator on the larger version. The only knock is that I am not a big fan of the bikini lens cover.

Great prism


Recently purchased, wanting something smaller than the full size for a chonky zastava. This scope is well laid out, easy to use and the mounting system is good to go. Eye relief wasn't bad at all and glass clarity is good. I have no concerns with this sight, feels well built; the full size now resides in the closet. Less weight, same functioning, smaller foot print.

(I've never shot it out to range so I can't say how accurate the bullet drop is)

No Tradeoff


With other prisms you trade eye box, FOV or eye relief. The SLX 3x does all three well with good glass. The ideal range I’ve found for this is about 50-200 yards which is perfect for a 300blk and perfect for hog hunting.

The prism sweet spot

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Every prism optic has you choose between FOV, eye relief, and eye box.This microprism does well in all three which makes Target acquisition at 50-200 is incredible. If you hunt hogs this is your optic setup.

Outstanding choice for AK Optic. Excellent balance of Magnification and CQB.


Mounted with AK Master Mount on AK-103. It is almost like it was made to be an AK optic. Sits as close to the cover as is possible. The optic is crystal clear and has just the right magnification for rage shots as well as CQB. Reticle is daylight bright although the etched reticle works well in daylight without illumination. I'm very pleased with this optic. Highly recommend.