Primary Arms
Primary Arms SLx 5x MicroPrism
Compact 5x prism with etched ACSS Aurora reticle for extended-range AR builds
Quick Specs
- Price
- $400
- Weight
- 8.5 oz
- Brand
- Primary Arms
- Category
- optic
Features
- •Fixed 5x
- •ACSS Aurora 5.56/.308 reticle
- •Prism design
Capability Boosts
Recommended For
+3 more
Compatibility Tags
Overview
The Primary Arms SLx 5x MicroPrism pushes the compact prism format to 5x magnification, giving astigmatic and simplicity-minded shooters more reach than the 3x MicroPrism while keeping the etched glass reticle that makes prisms work for eyes that smear a red dot. The ACSS Aurora reticle is etched into the glass and stays visible with the illumination off.
At 8.5 oz the 5x MicroPrism is only slightly heavier than the 3x, yet the extra magnification meaningfully extends positive target identification and precision past where a 3x runs out. The ACSS Aurora 5.56/.308 reticle layers a central chevron, ranging brackets, and wind and elevation holds calibrated for common 5.56 and .308 loads, so holdovers stay intuitive at distance.
The fixed 5x sits in the gap between the 3x MicroPrism and a full variable LPVO. It is the right call for a shooter who wants a fixed, rugged, astigmatism-friendly optic with genuine mid-range capability, mounted on a standard-length carbine or a designated marksman build. A CR2032 battery powers the illumination, backed by the etched reticle.
Key Features
- Fixed 5x magnification in a compact prism housing
- Etched ACSS Aurora 5.56/.308 reticle visible without battery
- Crisp reticle for shooters with astigmatism
- Ranging brackets and calibrated wind and elevation holds
- More reach than a 3x prism without LPVO bulk
- CR2032 battery with motion-sensing illumination
- Multiple mounting heights included
- Nitrogen purged, waterproof construction
Pros
- +5x reach in a fixed, rugged prism format
- +Etched reticle stays crisp for astigmatic eyes
- +ACSS Aurora adds ranging and ballistic holds
- +Reticle works without battery power
- +Lighter than a full LPVO with similar reach
Cons
- −Fixed 5x is too much magnification for close quarters
- −Tighter eyebox than the 3x MicroPrism
- −Prism eye relief is shorter than an LPVO
- −Mid-tier price near $400
Detailed Specifications
- Reticle
- ACSS Aurora 5.56/.308 Yard (etched, illuminated)
- Magnification
- 5x (fixed)
- Objective Diameter
- Prism optic
- Battery Type
- CR2032
- weight
- 8.5 oz
- Material
- Aluminum, nitrogen purged, waterproof
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Build Your Custom Configuration
Add the Primary Arms SLx 5x MicroPrism to your build and see how it enhances your platform.