The Primary Arms SLx 5X MicroPrism is a compact fixed-5x prism optic that delivers real mid-range magnification and a precise MIL reticle in a tiny 3.31in, 8.5oz package. Because the ACSS Aurora MIL reticle is etched into the glass, it stays crisp and fully usable even with the illumination off — a big advantage for shooters with astigmatism, who often see red dots as a smear.
The MIL-based reticle provides a full grid for ranging, elevation and wind holds. Red illumination spans 13 settings (3 NV-compatible) with AutoLive motion-sensing to save battery, and it ships with a modular mount offering 8 height options.
How It Compares
Want a 3x with a yard-based BDC? See the SLx 3X MicroPrism (ACSS Raptor). Browse all prism scopes and AR-15 optics; read our ACSS reticle explainer.
Ideal For
- Compact mid-range prism setups
- MIL-based reticle users
- Shooters with astigmatism (etched reticle)
- Lightweight alternatives to magnified LPVOs
Key Features
- Fixed 5x magnification; etched ACSS Aurora MIL reticle
- Full MIL grid for ranging, elevation and wind holds
- Usable with illumination off (astigmatism-friendly)
- 13 settings (3 NV); AutoLive; up to 29,000 h
- Modular mount with 8 height options; mini-prism footprint
Technical Specifications
| Magnification |
5x (fixed) |
| Objective |
26 mm |
| Reticle |
ACSS Aurora MIL (etched, red illuminated) |
| Brightness |
13 settings (3 NV) |
| Click Value |
0.25 MOA |
| Adjustment Range |
50 MOA W&E |
| Eye Relief |
2.7 in |
| Battery |
CR2032 (up to 29,000 h) |
| Length / Weight |
3.31 in / 8.5 oz |
| Mount |
Mini-prism footprint, 8 height options |
| Warranty |
Primary Arms Lifetime |
What's Included
- Primary Arms SLx 5X MicroPrism scope
- CR2032 battery, lens covers, modular mount (8 heights), manual
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and the Primary Arms Lifetime Warranty.
Frequently Asked Questions
Why a prism over a red dot?
The reticle is etched into the glass, so it stays sharp even without illumination — ideal for shooters with astigmatism.
3X or 5X?
The 5X offers more magnification for mid-range; the 3X is a bit more forgiving and compact.
How does it mount?
On the industry-standard mini-prism footprint, with 8 included height options.
