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Questions & Answers
is this motion activated.?? Expert Answer

The Primary Arms The SLx 3x MicroPrism Red Dot Sight does not have a shake awake function. It uses a manual brightness knob to turn on and off the illumination.

by Ethan, Gear Expert, August 17, 2022
What is the difference in reticle between the 5.56 FFP and the 5.56/.308? Why is First Focal Plane important when the magnification if fixed at 3x? Expert Answer

The Primary Arms The SLx 3x MicroPrism Red Dot Sight model 710036 and model 710040 are not FFP red dots, that is is a typo. However, the model 710036 has an ACSS reticle designed for use with 5.56/.223 and .308. The model 710040 has an ACSS reticle designed for 7.62x39 and 300 Blackout.

by Hunter, Gear Expert, August 18, 2022
Customer Reviews
Helpful Positive Review
Great prism optic by El, November 15, 2023
Very sleek and great looking prsim optic. I don't want another prism that looks like a red dot clone. The 3x came with several risers, some short - some tall to get that desired setup. That's a real nice touch from PA. With o...
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1/1 found this helpful
Helpful Positive Review
high quality for the cost by cb, Verified Owner, September 18, 2025
Well built with clear glass! Nice illumination. The adjustments are not the most crisp but they do the job fine. The eye relief isn’t very good because of the 3x coupled with a smaller objective but I did get used to it quickly. I would recommend pu...
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1/1 found this helpful
Helpful Positive Review
astigmatism hero by Roland Greens III, Verified Owner, May 28, 2025
I have an astigmatism and shooting reflects sights is somewhat difficult because of the starburst effect. This prism is crisp. The reticle etched makes it easy to see in the day/ around the house. When it’s turned to brightness 7, it is magical. Wou...
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3/3 found this helpful
Helpful Positive Review
Absolutely love it! by Matt Hart, Verified Owner, June 21, 2025
Super lightweight which was perfect for my "lightweight" 300blk AR. Optic is bright even on low setting.
1/1 found this helpful
Helpful Positive Review
Primary arms SLx 3x green by akr, Verified Owner, July 1, 2025
Bought this for my 5.56 ar15 platform and love it. Perfect site for what i needed.
1/1 found this helpful
Helpful Positive Review
Primary arms slx 3x by Rescue diver 17, Verified Owner, July 10, 2025
Great product, lots of mounting options, i mounted on my Galil 7.62x39 pistol, looks and work great, highly recommended.
1/1 found this helpful
Read All 123 Reviews
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Product Info for Primary Arms SLx 3x MicroPrism Red Dot Sight

This Primary Arms SLx 3x MicroPrism Red Dot Sight is part of the SLx optics line. SLx optics built the reputation for innovation, reliability, and value, and these Prismatic Red Dot Sights are no different. All SLx optics undergo rigorous field-testing during development to best serve you in any environment.image

The SLx 3x MicroPrism Red Dot Sight 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 Red Dot Sight is smaller and lighter than many red dot sights, though its crystal-clear glass and 3x magnification offer improved precision at distance. Even in close-quarters, the optics wide field-of-view and forgiving eye relief make it easy to snap on target.

Because the Primary Arms SLx 3x MicroPrism Red Dot Sight 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.

WARNING: California`s Proposition 65

Specifications for Primary Arms SLx 3x MicroPrism Red Dot Sight:

Manufacturer: Primary Arms
Fabric/Material: Aluminum
Magnification: 3 x
Objective Lens Diameter: 17 mm
Illumination Type: LED
Eye Relief: 2.7 - 3 in
Adjustment Type: MOA
Adjustment Click Value: 0.25 MOA
Emitter Type: Enclosed
Field of View, Linear: 38 ft at 100 yds
Battery Type: CR2032
Battery Quantity: 1
Water Resistance Level: Waterproof
Shockproof: Yes
Fogproof: Yes
Gun Make: AR Platform
Gun Model: AR-15
Weight: 7.95 oz
Condition: New
Red Dot Sights-Footprint: Not Applicable
Mount Type: Picatinny
Attachment Type: Picatinny
Exit Pupil: 10.3 mm

Features of Primary Arms SLx 3x MicroPrism Red Dot Sight

  • 13 Illumination settings + 3 NightVision; Highest settings are Daylight Bright
  • AutoLive motion-sensing on/off battery saving technology
  • Length: 2.95 Weight:

Package Contents:

  • Primary Arms SLx 3x MicroPrism Red Dot Sight

Primary Arms SLx 3x MicroPrism Red Dot Sight Orderable Models

List of Orderable Models

  • Primary Arms SLx 3X MicroPrism Red Dot Sigh, Green Illuminated ACSS Raptor 5.56/.308 Reticle - Yard, Black, 710037 , MPN: 710037 , UPC: 818500015291 , Code: 29R-PRD-PASLXACC-710037
  • Primary Arms SLx 3X MicroPrism Red Dot Sight, Green Illuminated ACSS Raptor 7.62x39/300AAC Reticle - Yard, Black, 710041 , MPN: 710041 , UPC: 818500015802 , Code: 29R-PRD-PASLXACC-710041
  • Primary Arms SLx 3X MicroPrism Red Dot Sigh, Red Illuminated ACSS Raptor 7.62/300BO Reticle - Yard, Flat Dark Earth, 710057 , MPN: 710057 , UPC: 818500015871 , Code: 29R-PRD-PASLXACC-710057
  • Primary Arms SLx Series MicroPrism Red Dot Sigh, 3x, ACSS Raptor 5.56 YP Illuminated Reticle, Black, 710036 , MPN: 710036 , UPC: 818500015673 , Code: 29R-PRD-PASLXACC-710036
  • Primary Arms SLx Series MicroPrism Red Dot Sigh, 3x, ACSS Raptor 7.62/300BO Reticle, Black, 710040 , MPN: 710040 , UPC: 818500015680 , Code: 29R-PRD-PASLXACC-710040
  • Primary Arms SLx 3X MicroPrism Red Dot Sigh, Red Illuminated ACSS Raptor 5.56/.308 Reticle - Yard, Flat Dark Earth, 710054 , MPN: 710054 , UPC: 818500015864 , Code: 29R-PRD-PASLXACC-710054
  • Primary Arms SLx 3X MicroPrism Red Dot Sigh, Red Illuminated ACSS Raptor 5.56/.308 Reticle - Meter, Black, 710038 , MPN: 710038 , UPC: 818500015796 , Code: 29R-PRD-PASLXACC-710038

Primary Arms SLx 3x MicroPrism Red Dot Sight Unavailable & Discontinued Models

List of Unorderable Models

  • USED Primary Arms SLx Series MicroPrism Red Dot Sigh, 3x, ACSS Raptor 7.62/300BO Reticle, Black, 710040, EDEMO2, Condition Fair, Other , MPN: 710040-EDEMO2 , Code: 29R-PRD-PASLXACC-710040-EDEMO-OT-D
  • USED Primary Arms SLx 3X MicroPrism Red Dot Sight, Green Illuminated ACSS Raptor 7.62x39/300AAC Reticle - Yard, Black, 710041, EDEMO2, Condition Fair, Other , MPN: 710041-EDEMO2 , Code: 29R-PRD-PASLXACC-710041-EDEMO-OT-D
  • USED Primary Arms SLx 3X MicroPrism Red Dot Sigh, Red Illuminated ACSS Raptor 7.62/300BO Reticle - Yard, Flat Dark Earth, 710057, EDEMO3, Condition Fair, Other , MPN: 710057-EDEMO3 , Code: 29R-PRD-PASLXACC-710057-EDEMO-OT-D
  • USED Primary Arms SLx 3X MicroPrism Red Dot Sigh, Red Illuminated ACSS Raptor 5.56/.308 Reticle - Yard, Flat Dark Earth, 710054, EDEMO1, Used, Condition Fair , MPN: 710054-EDEMO1 , Code: 29R-PRD-PASLXACC-710054-EDEMO1
  • USED Primary Arms SLx 3X MicroPrism Red Dot Sight, Green Illuminated ACSS Raptor 7.62x39/300AAC Reticle - Yard, Black, 710041, EDEMO1, Condition Parts Only/Salvage, Defective , MPN: 710041-EDEMO1 , Code: 29R-PRD-PASLXACC-710041-EDEMO-DF-F
  • USED Primary Arms SLx Series MicroPrism Red Dot Sigh, 3x, ACSS Raptor 5.56 YP Illuminated Reticle, Black, 710036, EDEMO7, Used, Condition Fair , MPN: 710036-EDEMO7 , Code: 29R-PRD-PASLXACC-710036-EDEMO7
  • DEMO, Primary Arms SLx 3X MicroPrism Red Dot Sight, Green Illuminated ACSS Raptor 7.62x39/300AAC Reticle - Yard, Black, 710041 , MPN: 710041-DEMO , Code: 29R-PRD-PASLXACC-710041-DEMO
  • DEMO, Primary Arms SLx 3X MicroPrism Red Dot Sigh, Red Illuminated ACSS Raptor 7.62/300BO Reticle - Yard, Flat Dark Earth, 710057 , MPN: 710057-DEMO , Code: 29R-PRD-PASLXACC-710057-DEMO
  • DEMO, Primary Arms SLx Series MicroPrism Red Dot Sigh, 3x, ACSS Raptor 7.62/300BO Reticle, Black, 710040 , MPN: 710040-DEMO , Code: 29R-PRD-PASLXACC-710040-DEMO
  • DEMO, Primary Arms SLx 3X MicroPrism Red Dot Sigh, Green Illuminated ACSS Raptor 5.56/.308 Reticle - Yard, Black, 710037 , MPN: 710037-DEMO , Code: 29R-PRD-PASLXACC-710037-DEMO
  • DEMO, Primary Arms SLx 3X MicroPrism Red Dot Sigh, Red Illuminated ACSS Raptor 5.56/.308 Reticle - Meter, Black, 710038 , MPN: 710038-DEMO , Code: 29R-PRD-PASLXACC-710038-DEMO
  • DEMO, Primary Arms SLx 3X MicroPrism Red Dot Sigh, Red Illuminated ACSS Raptor 5.56/.308 Reticle - Yard, Flat Dark Earth, 710054 , MPN: 710054-DEMO , Code: 29R-PRD-PASLXACC-710054-DEMO
  • DEMO, Primary Arms SLx 3x MicroPrism Red Dot Sight, 1/4 MOA, Prism Scope, Red Illuminated ACSS Raptor 5.56/.308 Yard, Black, 710036 , MPN: 710036-DEMO , Code: 29R-PRD-PASLXACC-710036-DEMO
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