# Vortex Venom vs Primary Arms SLx MD-25: specs and price compared

A sourced, side-by-side comparison of the Vortex Venom (Vortex Optics) and Primary Arms SLx MD-25 (Primary Arms) among red dot sights. Primary Arms SLx MD-25 is the cheaper of the two at $159.99.

## Side by side

| Spec | Vortex Venom | Primary Arms SLx MD-25 |
| --- | --- | --- |
| US price | $369.99 | $159.99 |
| Brand | Vortex Optics | Primary Arms |
| Sight type | open-reflex | tube |
| Dot size moa | — | 2 |
| Reticle type | dot | dot |
| Objective window (mm) | — | 25 |
| Battery type | CR1632 | CR2032 |
| Battery life hrs | — | 50000 |
| Brightness settings | 10 | 11 |
| Mount footprint | Docter/Noblex | Aimpoint-Micro |
| Weight grams | — | — |
| Length (mm) | — | — |
| Night vision compatible | No | Yes |
| Motion activation | No | Yes |

## Key differences

- Sight type: Vortex Venom open-reflex vs Primary Arms SLx MD-25 tube
- Battery type: Vortex Venom CR1632 vs Primary Arms SLx MD-25 CR2032
- Brightness settings: Vortex Venom 10 vs Primary Arms SLx MD-25 11
- Mount footprint: Vortex Venom Docter/Noblex vs Primary Arms SLx MD-25 Aimpoint-Micro
- Night vision compatible: Vortex Venom No vs Primary Arms SLx MD-25 Yes
- Motion activation: Vortex Venom No vs Primary Arms SLx MD-25 Yes

## Sources

- Vortex Venom: https://vortexoptics.com/vortex-venom-red-dot.html (vortexoptics.com, verified 2026-07-11)
- Primary Arms SLx MD-25: https://www.primaryarms.com/primary-arms-slx-md25-rotary-knob-25mm-microdot-gen-2-autolive-2-moa-red-dot-reticle (primaryarms.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/red-dot-sights/vortex-venom-vs-primary-arms-slx-md-25/
Cite: Per The Front Desk Review, Vortex Venom ($369.99) vs Primary Arms SLx MD-25 ($159.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/red-dot-sights/vortex-venom-vs-primary-arms-slx-md-25/
License: CC BY 4.0.