The Primary Arms SLx MD-25 Gen II is the classic 25mm tube red dot sight done right — a crisp 2 MOA dot, a positive rotary brightness knob, and AutoLive motion sensing stretching a CR2032 past 50,000 hours.
It shares the Aimpoint Micro footprint, and the box covers every setup: low base, standard riser and two spacers giving 0.96in, 1.41in, 1.54in or 1.64in centre heights. Eleven brightness settings include two for night vision, with 1/2 MOA clicks and fully multi-coated glass.
How It Compares
Smaller and lighter? The SLx MD-21. Which height do you need? See the mount height chart. Browse rifle dot sights and best budget red dots.
Key Features
- 2 MOA dot; 11 settings incl. 2 NV
- AutoLive — 50,000+ hours (CR2032)
- Rotary knob; 1/2 MOA clicks
- Aimpoint Micro footprint; 4 mount heights included
- 6.5 oz; hardcoat anodised aluminium; lifetime warranty
Technical Specifications
| Reticle |
2 MOA red dot |
| Battery |
CR2032 — 50,000+ h with AutoLive |
| Footprint |
Aimpoint Micro / standard microdot |
| Heights |
0.96in / 1.41in / 1.54in / 1.64in (all included) |
| Weight / Length |
6.5 oz / 3in |
| SKU / MPN / UPC |
PA-SLX-MD-25-G2 / 810032 / 818500018292 |
What's Included
- MD-25 Gen II sight, low base, riser, two spacers, CR2032, tools, manual
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Primary Arms' lifetime warranty.
Frequently Asked Questions
Will Aimpoint Micro mounts fit?
Yes — it uses the standard Aimpoint Micro footprint, so T1/T2-pattern mounts work.
Knob or push buttons?
The rotary knob gives positive, gloved adjustment and a definite off position; the MD-21 series uses push buttons if you prefer.
