Primary Arms SLX 1X MicroPrism with RDB Illuminated Reticle
- Rifle Scope
- 1x
- 1x
- Hunting
- Better rated than 84%
A compact, general-purpose prism optic with a reticle etched into glass for reliability, best suited to shooters who want simplicity over the caliber-specific ballistic calibration found on the Gemini version, and with the same caveat: bring your own low mount if you need one.
As an Amazon Associate, ProductDome may earn a commission from qualifying purchases made through links on this page.
How it ranks among the 359 rifle scopes we track
5.0★ across 4 Amazon ratings, Bayesian-smoothed toward the category average.
4 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 359 rifle scopes we track - how the scorecard works · full rifle scopes data report. Confidence: limited - limited rating history.Last refreshed Jun 22, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This version of the Primary Arms SLX 1X MicroPrism swaps in the ACSS Cyclops Gen II reticle, a bold single center aiming point with built-in ranging, rather than the 9mm-specific Gemini reticle used on the sibling model.
Where the Gemini variant targets 9mm carbine shooters specifically, the Cyclops Gen II reticle is a simpler, high-contrast dot-style aiming point meant to work across a broader range of calibers and use cases. The same mount discrepancy applies here too: the box, manual and listing all reference a low mount that does not actually ship with the unit.
- ACSS Cyclops Gen II center aiming reticle
- 76.5 ft field of view at 100 yards
- 15.6mm exit pupil, 3.6 inch eye relief
- H1/T1 footprint, IP67 rated
Who it's for
A fit for shooters who want a fast, uncomplicated aiming reference rather than a caliber-specific BDC ladder, on a compact optic that still works with the reticle etched into glass if the battery dies.
What buyers say
From Amazon customer reviews.
Reviewers praised the reticle clarity, particularly for those with astigmatism, and one called it a clear step up from a pricier EOTech they had owned previously. As with the Gemini version, the recurring flag was that only the high mount arrived despite documentation suggesting a low mount was included.
Strengths and trade-offs
Drawn from this product's published specifications.
- Etched glass reticle stays usable with no battery
- Wide 15.6mm exit pupil and 76.5 ft field of view
- Compact at 2.48 inches and 5.5 oz with battery
- AutoLive motion sensing conserves battery life
- Ships with only the high mount despite documentation stating otherwise
- Cyclops Gen II reticle has no caliber-specific BDC ladder
Performance notes
At 2.48 inches long and 5.5 oz with battery, the optic adds minimal weight to a host firearm, and a 76.5 foot field of view at 100 yards with 3.6 inch eye relief gives a forgiving sight picture for fast target pickup. The 15.6mm exit pupil is notably wide for a prism optic, which helps eye alignment speed when shouldering the weapon under time pressure.
Specifications
| Brand | Primary Arms |
|---|---|
| Model | PA-SLX-1XMP-H-CYCLOPS-G |
| Dimensions & fit | |
| Item Weight | 1.05 pounds |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Black |
| Compatibility & installation | |
| Mounting Type | Picatinny Mount |
| Compatible Devices | Rifle |
| Included components | |
| Unit Count | 1 |
| Included Components | 2.26" mount |
| Warranty & support | |
| Warranty Description | Limited lifetime |
| Other details | |
| Magnification Minimum | 1x |
| Magnification Maximum | 1x |
| Sport Type | Hunting |
| Reticle Type | Green - Cyclops |
| Night vision | No |
| Product Style | Tactical |
| Field Of View | 76.5 |
Other Primary Arms rifle scopes
How it compares
This product against the closest alternatives we track in rifle scopes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Primary Arms SLX 1X MicroPrism with RDB Illuminated ReticleThis product | 5.0 / 5 | 4 | 2.7 / 5 |
| UTG 3-12X44 30mm Compact ScopeUTG | 4.5 / 5 | 3,000 | 4.4 / 5 |
| Vortex Optics Diamondback Second Focal PlaneBrand | 4.7 / 5 | 1,500 | 4.3 / 5 |
| PINTY Tactical Rifle Scope Combo: Illuminated OpticsPinty | 4.4 / 5 | 1,100 | 4.3 / 5 |
| Firefield RapidStrike 1-6x24 SFP Riflescope KitFirefield | 4.5 / 5 | 900 | 4.3 / 5 |
Similar rifle scopes from other brands
Questions about the Primary Arms PA-SLX-1XMP-H-CYCLOPS-G
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How is this different from the ACSS Gemini version?
This model uses the ACSS Cyclops Gen II reticle, a general-purpose high-contrast aiming point, rather than the 9mm-calibrated Gemini reticle.
What is the eye relief?
The listing states 3.6 inches of eye relief with a usable range of 2 to 7 inches.
Does it include a low mount?
No, only the 2.26 inch high mount ships, despite the packaging and manual stating a low mount is included.