The Primary Arms SLx 3X MicroPrism, part number 710036, is a fixed 3x prism scope with the ACSS Raptor 5.56/.308 Yard reticle etched into the glass and illuminated in red.
A prism scope solves something a red dot cannot. The aiming point is cut into glass and viewed through the scope's own focusing system, so an eye with astigmatism sees a reticle rather than a smeared comet of LED light.
It weighs 7.95 oz and is finished in black, with exposed low-profile turrets adjustable with a tool, 1/4 MOA per click and 80 MOA of travel in both windage and elevation. The view gives 38 ft of field at 100 yards (12.7 m at 100 m), 2.70 in (69 mm) of eye relief and a 7.4 mm exit pupil. Illumination runs 13 settings, three of them night-vision compatible, from a CR2032, and AutoLive shuts the emitter down when the rifle is left still.
The ACSS Raptor does more than mark the centre: a chevron for the precise hold, bullet drop holdovers so distance is aimed off rather than dialled, ranging stadia and wind marks, laid out in yards for 5.56 and .308. Because it is etched, it still works with the illumination off or the cell flat. The trade against an LPVO is that 3x is all you get, and against a red dot that there is a defined eye box to find. It mounts on the Primary Arms MicroPrism and Trijicon Mini-ACOG footprint.
Why shooters choose the SLx 3X MicroPrism
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Magnification — fixed 3x, in a body far shorter than an LPVO
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Reticle — ACSS Raptor 5.56/.308 Yard etched in glass, with holdovers, ranging and wind marks
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Astigmatism — the etched reticle is resolved by the scope's own optics, not projected as an LED
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Illumination — red, 13 settings with three night-vision compatible, plus AutoLive motion sensing
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Backup — fully usable with the illumination off or the battery flat
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Turrets — 1/4 MOA clicks with 80 MOA of windage and elevation travel
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Optics — 38 ft of field at 100 yards, 2.70 in of eye relief and a 7.4 mm exit pupil
What the SLx 3X MicroPrism fits
It uses the Primary Arms MicroPrism and Trijicon Mini-ACOG mounting footprint, which puts it on a Picatinny flat-top. The same optic with green illumination is the SLx 3X green ACSS Raptor and the FDE version is the SLx 3X Raptor FDE. For an unmagnified prism instead, see the SLx 1X MicroPrismT Cyclops Gen II.
Specifications
| Type |
MicroPrism scope, fixed magnification |
| Magnification |
3x fixed |
| Reticle |
ACSS Raptor 5.56/.308 Yard, glass-etched |
| Reticle colour |
Red, illuminated |
| Illumination |
13 settings, 3 night-vision compatible, with AutoLive |
| Battery |
CR2032 3V lithium coin cell |
| Click value |
1/4 MOA per click |
| Adjustment range |
80 MOA elevation, 80 MOA windage |
| Field of view |
38 ft at 100 yards (12.7 m at 100 m) |
| Eye relief |
2.70 in (69 mm) |
| Exit pupil |
7.4 mm |
| Turrets |
Exposed low-profile, tool-adjustable |
| Mount footprint |
Primary Arms MicroPrism / Trijicon Mini-ACOG |
| Weight |
7.95 oz |
| Finish |
Black |
| MPN |
710036 |
If red dots have always looked wrong to you, this is the class of optic to try before spending more on another one. Order the SLx 3X MicroPrism today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: Prism Scopes, Straight-Pull Rifle Optics or browse all Primary Arms
