Primary Arms SLx 5X MicroPrism Scope Red Illuminated ACSS Aurora MIL Reticle
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The Primary Arms SLx 5X MicroPrism is a fixed 5x prism scope with the ACSS Aurora reticle etched into the glass in the MIL version, illuminated in red.
Because the reticle is etched rather than projected, it stays sharp for eyes that see an LED red dot as a smear or a double image — and it is still there when the battery is flat.
Illumination runs from one CR2032 rated at 29,000 hours, with AutoLive motion sensing waking it and night-vision compatible settings at the bottom of the range. The turrets are exposed, low-profile and tool-adjustable, moving in 1/4 MOA clicks across 50 MOA of total elevation and 50 MOA of total windage. Eye relief is 2.70 in, the exit pupil is 5.1 mm, field of view is 21.0 ft at 100 yards and the scope weighs 8.5 oz (241 g).
A fixed 5x in a body this size is a genuinely useful mid-range optic for target work, stalking and service-rifle shooting, and the Aurora MIL grid ranges, holds elevation and holds wind in milliradians rather than being cut for one cartridge. The honest limitation is fixed magnification: 5x is too much for a close, fast target, and eye relief at 2.70 in demands a consistent head position.
It uses the Primary Arms MicroPrism mounting pattern, which also matches Trijicon Mini-ACOG mounts, so it sits on a Picatinny flat-top through one of those. For a wider field of view and a 5.56/.308 ballistic reticle instead of a MIL grid, see the SLx 3X MicroPrism in FDE, and for 1x prisms the SLx 1X MicroPrismT. The rest live in prism scopes.
| Type | Prism scope, fixed magnification |
|---|---|
| Magnification | 5x |
| Reticle | ACSS Aurora MIL, glass-etched, red illuminated |
| Illumination | Night-vision compatible settings with AutoLive motion sensing |
| Battery | CR2032, up to 29,000 hours |
| Adjustment | 1/4 MOA per click |
| Adjustment Range | 50 MOA total elevation / 50 MOA total windage |
| Turrets | Exposed low-profile, tool-adjustable |
| Eye Relief | 2.70 in |
| Exit Pupil | 5.1 mm |
| Field of View | 21.0 ft at 100 yd |
| Weight | 8.5 oz (241 g) |
| Mount Pattern | Primary Arms MicroPrism / Trijicon Mini-ACOG |
| MPN | 710046 |
Five times magnification, a MIL grid and a reticle that does not need power. Order the SLx 5X 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, SLx 1X MicroPrismT Green or browse all Primary Arms.
| Brand | Primary Arms |
|---|---|
| Part no. | PA-SLX-5XMP-AUR-MIL |
| Category | Rifle Scope |
| Barcode | 818500018551 |
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
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