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Questions & Answers
Would a Larue Aimpoint T-1 Micro ring mount fit on this optic? Expert Answer

No, the Primary Arms SLx 5X Micro Prism does not utilize the Aimpoint T1 mounting footprint and would not be compatible with T1 pattern mounts. It uses the Mini Prism/Mini ACOG footprint.

by Ethan, Gear Expert, August 3, 2023
Which reticle is this? The ACSS BDC or the ACSS MIL. Also which caliber? They announced they will make a 5.56 and a 308 reticle for each….. Expert Answer

This Primary Arms SLx 5X Micro Prism uses the ACSS AURORA 5.56 Reticle. The ACSS Aurora 5.56/.308 reticle is a high-performance BDC reticle with a comprehensive toolset for ranging and engaging targets. This reticle uses yards-based holdovers, which are optimized for 5.56 and .308 cartridges.

by Ethan, Gear Expert, January 25, 2024
Customer Reviews
Helpful Positive Review
Sturdy little package. Smooth lines on a solid little body. Convenient bikini cover. Auto illumination is very convenient and works well. Reticle is clear. No electronic malfunctions in first 2 months of owning it, with it on (in standby when no...
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1/1 found this helpful
Helpful Positive Review
5X Prism scope from Primary Arms by Capt. Mike, Verified Owner, September 4, 2023
I have used the 5X prism earlier generation from Primary Arms and found it to be an excellent choice for shooting out to 200 yards on an 18" AR platform. The best part is the reticle which is etched and does not starburst on you if you have any sor...
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16/17 found this helpful
Helpful Positive Review
Can't recommend them enough by RL, Verified Owner, August 30, 2025
This is my 4th PA prism & i still have the first on a 10.5 mock18 build. I personally prefer them over red dots since if they run out of battery they are still an etched reticle. I've never had a problem mounting, zeroing or using any prism from prim...
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1/1 found this helpful
Helpful Positive Review
Great optic, great value by Dave Sanford, Verified Owner, August 10, 2024
I’ve tried LVPO, red dot and 3x magnifier, and wanted to try fixed magnification. The 5x micro prism is a solid optic. It’s lightweight, super crisp, has a great reticle (aurora 5.56 bdc), and comes with multiple risers to dial in your optic position...
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5/5 found this helpful
Helpful Positive Review
PA micro prism 5x by John, Verified Owner, March 8, 2025
Awesome sight, clear glass, lightweight. Very efficient sight. BDC accurate. Already Have 2 3xs in 762x39, probably be getting another.
4/4 found this helpful
Helpful Positive Review
great little optic by Chris, Verified Owner, September 21, 2023
Works great. Size and weight is amazing. I got the 12-o’clock bracket and mounted a red dot on top. Love that option. The one thing I don’t like is the fact it’s made in china. I was under the impression it was made in the USA. Unfortunately it is no...
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8/15 found this helpful
Read All 15 Reviews

14% OFF Red Dot Sights

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Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
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Product Info for Primary Arms SLx 5X Micro Prismatic Red Dot Sight

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.image

For precision without compromise, the SLx 5x MicroPrism brings an extended range to this lightweight, ultra-compact design. Weighing only 8.5oz with a 3.31in overall length, the SLx 5x MicroPrism is comparable to many red dot sights, though its crystal-clear glass and 5x magnification offer improved precision at even longer distance than the 3x variant. Even in close-quarters, the optics wide field-of-view and forgiving eye relief make it easy to snap on target.

Because the SLx 5x 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.

WARNING: California`s Proposition 65

Specifications for Primary Arms SLx 5X Micro Prismatic Red Dot Sight:

Manufacturer: Primary Arms
Magnification: 5 x
Objective Lens Diameter: 26 mm
Illumination Type: LED
Eye Relief: 2.7 in
Adjustment Click Value: 0.25 MOA
Emitter Type: Enclosed
Field of View, Linear: 38 ft at 100 yds
Battery Type: CR2032, Stand Alone Lithium
Condition: New
Red Dot Sights-Footprint: Not Applicable

Package Contents:

  • Primary Arms SLx 5X Micro Prismatic Red Dot Sight

Primary Arms SLx 5X Micro Prismatic Red Dot Sight Orderable Models

List of Orderable Models

  • Primary Arms SLx 5X Micro Prism, Red Illuminated ACSS Aurora 5.56/.308 Yard, Black, 710042 , MPN: 710042 , UPC: 818500018544 , Code: 29R-PRD-MP5X-710042
  • Primary Arms SLx 5X Micro Prism, Red Illuminated ACSS Aurora MIL, Black, 710046 , MPN: 710046 , UPC: 818500018551 , Code: 29R-PRD-MP5X-710046
  • Primary Arms SLx 5X Micro Prismatic Red Dot Sight, Red Illuminated ACSS Aurora 5.56/.308 Yard, Black, 710053 , MPN: 710053 , UPC: 818500018599 , Code: 29R-PRD-MP5X-710053
  • Primary Arms SLx 5X Micro Prismatic Red Dot Sight, Green Illuminated ACSS Aurora 5.56/.308 Yard, Black, 710043 , MPN: 710043 , UPC: 818500018582 , Code: 29R-PRD-MP5X-710043

Primary Arms SLx 5X Micro Prismatic Red Dot Sight Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Primary Arms SLx 5X Micro Prism, Red Illuminated ACSS Aurora 5.56/.308 Yard, Black, 710042 , MPN: 710042-DEMO , Code: 29R-PRD-MP5X-710042-DEMO
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