Primary Arms SLx 3X MicroPrism Scope Red Illuminated ACSS Raptor 5.56/.308 Yard Reticle – 710036

The Primary Arms SLx 3X MicroPrism Scope 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

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.

How It Compares

Prefer green illumination or FDE? See the 3X Green or 3X FDE. Want 1× or more magnification? The SLx 1X MicroPrism or SLx 5X MicroPrism. Browse all Primary Arms prism scopes and our ACSS reticle guide.

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.