The Primary Arms SLx 3X MicroPrism 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 — making it a favourite for shooters with astigmatism, who often see red dots as a smear. At under 8 oz and under 3 inches, this compact fixed-3× prism adds real magnification and a ballistic reticle without the bulk of an LPVO.
The ACSS Raptor 5.56/.308 Yard reticle packs in bullet-drop holdovers, ranging, wind holds and a precise centre chevron. Red illumination spans 13 settings (3 night-vision compatible) with AutoLive motion-sensing to preserve battery, and it ships with a ruggedised mount offering 8 height options. In stock for fast UK dispatch.
Ideal For
- Compact prism optic setups
- 5.56 / .308 rifle builds
- Mid-range shooting
- General-purpose rifle setups
- Astigmatism-friendly aiming
- Shooters wanting more precision than a 1× optic
Key Features
- 3X fixed magnification MicroPrism optic
- Red illuminated ACSS Raptor 5.56/.308 Yard reticle
- Etched reticle remains usable without illumination
- 13 illumination settings (3 night-vision compatible)
- AutoLive motion-sensing illumination technology
- Daylight-bright reticle at higher settings
- Wide 38 ft field of view at 100 yards
- 80 MOA elevation and windage adjustment range
- 1/4 MOA click adjustments
- Ruggedised mounting system with 8 height options
- Industry-standard mini-prism mount footprint
- Primary Arms Lifetime Warranty
Technical Specifications
| Product Type |
MicroPrism Scope |
| Magnification |
3× |
| Reticle |
ACSS Raptor 5.56/.308 Yard |
| Reticle Colour |
Red (illuminated, etched) |
| Brightness Settings |
13 (3 night-vision compatible) |
| Battery Type |
CR2032 3V Lithium Coin |
| Battery Life |
Up to 29,000 hours (medium setting) |
| Click Value |
1/4 MOA |
| Total Elevation Adjustment |
80 MOA |
| Total Windage Adjustment |
80 MOA |
| Field of View @ 100 Yards |
38 ft |
| Eye Relief |
2.70 in |
| Exit Pupil Diameter |
7.4mm |
| Length |
2.95 in |
| Weight |
Under 7.95 oz |
| Mount Compatibility |
Primary Arms MicroPrism / Trijicon Mini-ACOG footprint |
| Mounting Options |
8 height options included |
| Finish |
Black |
| Warranty |
Primary Arms Lifetime Warranty |
| SKU |
PA-SLX-3XMP-RAPTOR-5YP |
| MPN |
710036 |
| UPC |
818500015673 |
What's Included
- Primary Arms SLx 3X MicroPrism Scope
- CR2032 Battery
- Lens Covers
- Ruggedised mounting system
- Mounting hardware
- 8 mounting height configuration options
- User manual / documentation
UK Delivery & Support
This Primary Arms SLx 3X MicroPrism is UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based aftersales support and Primary Arms' lifetime warranty.
Frequently Asked Questions
Why choose a prism over a red dot?
The reticle is etched into the glass rather than projected, so it stays sharp even without illumination — a big advantage for shooters with astigmatism, who often see red dots as a smudge.
What is the ACSS Raptor reticle?
A purpose-built reticle with bullet-drop holdovers, ranging, moving-target leads and wind holds for 5.56 and .308, plus a precise centre chevron.
What magnification is it?
A fixed 3× — more reach and precision than a 1× dot, while staying far more compact than an LPVO.
How is the battery managed?
A CR2032 cell with AutoLive motion-sensing illumination, rated up to ~29,000 hours on a medium setting.
How does it mount?
On the industry-standard mini-prism footprint, and it ships with a ruggedised mount offering 8 height options.
