The Primary Arms SLx 1-10x28 gives you a wider zoom range than a typical 1-6x LPVO while keeping a usable 1x sight picture up close — true 1x for speed, dialling to 10x for target ID and longer shots. It runs the second-focal-plane ACSS Griffin M10S reticle, purpose-designed for 1-10x SFP optics.
A bold horseshoe and chevron drive close-range speed, while the MIL grid and ranging stadia support holdovers and range estimation at magnification. Built on a 34mm 6061-T6 aluminium tube with NV-compatible illumination.
How It Compares
Prefer 1-6x and a simpler reticle? See the SLx 1-6x24 Gen IV. Want premium glass and FFP? The PLxC 1-8x24. Browse the Primary Arms LPVO range, all LPVO rifle scopes and AR-15 optics; read our best LPVO guide.
Ideal For
- AR-platform rifles and carbines
- Shooters wanting 1-10x flexibility
- Close to mid-range and target ID
Key Features
- True 1-10x; SFP ACSS Griffin M10S reticle
- MIL grid with ranging stadia; 0.5 MOA clicks
- NV-compatible illumination (11 settings, 2 NV)
- 34mm one-piece 6061-T6 aluminium tube
- Integrated magnification lever; Lifetime Warranty
Technical Specifications
| Magnification |
1-10x |
| Objective |
28 mm |
| Tube |
34 mm |
| Focal Plane |
Second Focal Plane |
| Reticle |
ACSS Griffin M10S (red illuminated) |
| Click Value |
0.5 MOA |
| Adjustment Range |
40 MOA W&E |
| Eye Relief |
3.2–3.5 in |
| Battery |
CR2032 (11 settings, 2 NV) |
| Length / Weight |
10.5 in / 19.1 oz |
| Warranty |
Primary Arms Lifetime |
What's Included
- Primary Arms SLx 1-10x28 rifle scope
- CR2032 battery, documentation
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and the Primary Arms Lifetime Warranty.
Frequently Asked Questions
Is it a true 1x?
Yes — at 1x it works like a red dot for fast, both-eyes-open shooting, then dials to 10x.
What is the Griffin M10S reticle?
An MRAD reticle designed for 1-10x SFP optics, with a fast centre plus a MIL grid and ranging stadia.
What mount does it need?
A 34mm mount or cantilever.
