The Primary Arms SLx 1-6x24 Gen IV LPVO Rifle Scope (part number 610183, SKU PA-SLX-1-6X24S-NOVA) is a 1-6x magnification, 24 mm objective low-power variable optic on a 30 mm tube, with a second focal plane (SFP) ACSS Nova fiber-wire reticle and red daylight-bright illumination. It adjusts in 0.1 MIL clicks, offers 120 MOA of windage and elevation travel, and runs from a single CR2032 cell across 11 brightness settings.
At 1x the SLx behaves like a red dot sight: both eyes open, illumination bright enough to use in daylight, no meaningful magnification to slow you down. Wind it to 6x and the same optic identifies and engages targets at distance. That range of jobs from one sight is the whole argument for an LPVO, and the Gen IV platform adds an upgraded optical system, an integrated throw lever and capped low-profile turrets.
How It Compares
This is the red-illuminated black version. The SLx 1-6x24 Gen IV rifle scope with green ACSS Nova illumination gives a high-contrast green centre that many shooters pick up faster, and the same scope is offered in Flat Dark Earth with red illumination or green illumination. If you want a calibre-specific 5.56 holdover reticle instead of the MIL-based Nova, take the SLx 1-6x24 with the ACSS Aurora 5.56 Meter reticle. For more top-end magnification, the SLx 1-10x28 rifle scope reaches 10x. You will need a 30 mm mount — the Primary Arms SLx 30 mm cantilever mount is the natural partner. Browse the Primary Arms LPVO range, all LPVO rifle scopes and optics for straight-pull rifles, and read our explainer on the ACSS reticle system.
Ideal For
- Civilian Service Rifle and practical rifle, where one optic must work from 25 m to 300 m
- Straight-pull AR-platform rifles used for practical and service disciplines in Great Britain
- Practical shotgun and 3-Gun stages that mix close targets with distant plates
- Deer stalking and vermin control where a true 1x helps for a moving shot in cover
Key Features
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Magnification: True 1-6x — genuinely unmagnified at the bottom of the range, so both-eyes-open shooting works as it does with a red dot
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Reticle: ACSS Nova fiber-wire, second focal plane, with MIL subtensions for ranging, holdovers and moving-target leads
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Illumination: Daylight-bright red, 11 brightness settings, powered by one CR2032 cell
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Turrets: Capped low-profile, 0.1 MIL per click, 120 MOA of windage and elevation travel
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Tube: 30 mm, requiring 30 mm rings or a 30 mm cantilever mount
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Handling: Integrated throw lever for fast magnification changes
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Warranty: Primary Arms Lifetime Warranty
Technical Specifications
| Magnification / Objective |
1-6x magnification, 24 mm objective |
| Focal Plane |
Second focal plane (SFP) |
| Reticle |
ACSS Nova fiber-wire, red illuminated |
| Illumination |
Red, daylight-bright, 11 brightness settings |
| Tube Diameter |
30 mm |
| Click Value |
0.1 MIL per click |
| Adjustment Range |
120 MOA windage and elevation |
| Turrets |
Capped, low-profile |
| Eye Relief |
4.0 in (102 mm) |
| Battery |
CR2032 |
| Length / Weight |
10.4 in (264 mm) / 17.9 oz (508 g) |
| Finish |
Black |
| Mount |
Requires 30 mm rings or a 30 mm cantilever mount, sold separately |
| Warranty |
Primary Arms Lifetime Warranty |
| SKU / MPN / UPC |
PA-SLX-1-6X24S-NOVA / 610183 / 818500018759 |
What's Included
- Primary Arms SLx 1-6x24 Gen IV rifle scope
- User documentation
Warranty
Covered by the Primary Arms Lifetime Warranty.
UK Delivery & Support
This rifle scope is UK-stocked and dispatched tracked from our UK warehouse — no import duties and no customs delays — backed by UK-based aftersales support and the Primary Arms Lifetime Warranty.
Frequently Asked Questions
What does the ACSS Nova reticle actually do?
The ACSS Nova is a fiber-wire reticle with a daylight-bright illuminated centre surrounded by MIL-based subtensions, which let you range a target of known size, apply a holdover for drop instead of dialling the turret, and hold off for wind and for moving-target leads without taking your eye from the sight.
Which calibre is the ACSS Nova reticle calibrated for?
The ACSS Nova is a milliradian-based reticle rather than a calibre-specific bullet drop compensator, so its subtensions are stated in MIL and work with any cartridge once you know your own drops in MIL. If you want a reticle built around a specific load, the ACSS Aurora 5.56 Meter version of this scope is calibrated for 5.56.
What does second focal plane mean on a 1-6x scope?
Second focal plane means the reticle stays the same visual size as you change magnification, so the ACSS Nova remains large and easy to see at 1x for close work, while its MIL subtensions are only correct at one stated magnification, which on this scope is the top end of the range.
What mount does the Primary Arms SLx 1-6x24 need?
The Primary Arms SLx 1-6x24 has a 30 mm tube, so it needs 30 mm rings or a 30 mm cantilever mount. The mount is not included with the scope.
Is the illumination bright enough to use in daylight?
Yes. The red illumination on the SLx 1-6x24 Gen IV is daylight-bright at its highest of 11 settings, which is what allows the reticle to be used like a red dot sight at 1x in full sun.
Is this scope a true 1x at the bottom of its range?
Yes. The Primary Arms SLx 1-6x24 Gen IV is a true 1x at its lowest setting, meaning the image through the scope matches what the unaided eye sees, so both-eyes-open shooting is practical.
