The Primary Arms GLx RS-15 is a competition-bred mini reflex red dot sight with a huge 26x20mm window and the patented ACSS Vulcan reticle — a crisp 3 MOA dot with a 250 MOA outer ring that only appears when your presentation drifts, dragging your eye back to centre.
The top-loading CR2032 swaps without unmounting (no re-zero), AutoLive motion sensing stretches runtime past 25,000 hours dot-only, and 13 brightness settings include 3 for night vision. Fully potted electronics ride out recoil and weather in the 7075 aluminium body — just 1.11 oz.
How It Compares
Need the RMR/507C footprint instead of C-More? The new GLx RS-15R is this optic rebuilt on that pattern. Want enclosed? The PLx HTX-1. Simpler budget option? The SLx RS-10R. New to Vulcan? Read our ACSS guide; browse pistol dot sights.
Key Features
- ACSS Vulcan — 3 MOA dot + 250 MOA correction ring
- Large 26x20mm aperture; 13 settings incl. 3 NV
- Top-load CR2032 — no re-zero on battery swaps
- AutoLive; 25,000+ h (dot), ~5,000 h (Vulcan)
- 7075 aluminium, potted electronics, 1.11 oz; Glock MOS plate included
Technical Specifications
| Reticle |
ACSS Vulcan (3 MOA dot / 250 MOA ring, selectable) |
| Window |
26 x 20mm |
| Battery |
CR2032 top-load; AutoLive |
| Footprint |
C-More/DPP pattern; Glock MOS plate included |
| Adjustment |
0.5 MOA per click |
| Weight |
1.11 oz — 7075 aluminium |
| SKU / MPN / UPC |
PA-GLX-RS-15TL-ACSS / 810038 / 818500018858 |
What's Included
- GLx RS-15 sight, Glock MOS mounting plate, 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
How does the Vulcan ring work?
When your aim is on, you see only the 3 MOA dot; drift off-window and the huge ring appears, showing exactly which way to correct — brilliant for learning a consistent draw.
Which pistols does it fit?
It uses a C-More/DPP-style footprint and ships with a Glock MOS plate; for RMR/507C-cut slides choose the RS-15R instead. Check your slide cut in our footprint chart.
