The Primary Arms SLx 3X MicroPrism with green illumination does something a red dot can't: because its ACSS Raptor reticle is etched into the glass, it stays crisp and fully usable even with the illumination off — a favourite for shooters with astigmatism, who often see red dots as a smear. The green emitter many find faster to pick up.
At under 8 oz and under 3 inches, this fixed-3x prism adds real magnification and a ballistic reticle without the bulk of an LPVO. The ACSS Raptor 5.56/.308 Yard reticle packs bullet-drop holdovers, ranging, wind holds and a precise centre chevron.
How It Compares
Prefer red, or want a coyote finish? See the 3X MicroPrism red or red FDE. Want more magnification? The SLx 5X MicroPrism. Browse all prism scopes and AR-15 optics; read our ACSS explainer.
Ideal For
- Compact 5.56/.308 rifle builds
- Mid-range shooting
- Shooters with astigmatism (etched reticle)
- Those preferring a green aiming point
Key Features
- Fixed 3x; etched green ACSS Raptor 5.56/.308 Yard reticle
- Usable with illumination off (astigmatism-friendly)
- 13 settings (3 NV); AutoLive; up to ~29,000 h
- Wide 38 ft FOV at 100 yds; 1/4 MOA clicks
- Ruggedised mount with 8 height options; mini-prism footprint
Technical Specifications
| Magnification |
3x (fixed) |
| Reticle |
ACSS Raptor 5.56/.308 Yard (etched, green) |
| Brightness |
13 settings (3 NV) |
| Click Value |
1/4 MOA |
| Adjustment Range |
80 MOA W&E |
| FOV @ 100 yd |
38 ft |
| Eye Relief |
2.7 in |
| Battery |
CR2032 (up to ~29,000 h) |
| Length / Weight |
2.95 in / under 8 oz |
| Mount |
Mini-prism footprint, 8 heights |
| Warranty |
Primary Arms Lifetime |
What's Included
- Primary Arms SLx 3X MicroPrism scope
- CR2032 battery, lens covers, ruggedised 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
Green or red?
Many shooters find green appears brighter; otherwise identical to the red 3X MicroPrism.
Why a prism over a red dot?
The etched reticle stays sharp even without illumination — ideal for astigmatism.
How does it mount?
On the industry-standard mini-prism footprint, with 8 included height options.
