Low power variable optics
Primary Arms SLx 1-6x24 Gen IV: Full Specifications
Quick answer
The Primary Arms SLX 1-6x24 Second Focal Plane Gen IV LPVO Riflescope lists at $349.99. Published figures: magnification 1-6x, objective lens 24 mm, focal plane Second. It suits holding rather than dialling, on a 5.56 or .308 carbine.
The ACSS reticle does ranging, holdover and a moving target lead in one etched pattern calibrated to a cartridge class, which is a lot of capability for a shooter who will never dial a turret.
Every figure below is the manufacturer's own published specification, taken from the product listing and the data sheet. Where a figure is not published it is left out rather than estimated, which is why some sheets are shorter than others. Price is the listed price when this page was last compiled and it changes often.
On this page
Primary Arms SLx 1-6x24 Gen IV specifications
The Primary Arms SLx 1-6x24 Gen IV publishes magnification 1-6x, objective lens 24 mm, focal plane Second, at a listed price of $349.99.
Sourced figure
| Specification | Published figure |
|---|---|
| Magnification | 1-6x |
| Objective lens | 24 mm |
| Focal plane | Second |
| Illuminated reticle | Yes |
Specifications above are the manufacturer published figures, taken from the product listing. Figures the maker does not publish, such as total elevation travel or exact eye relief, are omitted here rather than estimated.
What the manufacturer says about it
The manufacturer own listing bullets, quoted rather than paraphrased so you can judge the claims yourself. These are marketing copy, not independent measurement.
Primary Arms lists 5 headline points for the SLx 1-6x24 Gen IV, quoted here verbatim.
| Manufacturer listing point |
|---|
| ACSS Aurora 5.56/.308 Yard Reticle: Second focal plane BDC reticle with yard-based holdovers calibrated for 5.56 and .308 delivers fast, accurate ranging and engagement at any distance |
| Fully Upgraded Optical System: Premium glass and an integrated dovetail throw lever deliver superior clarity and swift magnification control from 1x to 6x |
| Bright Red Illumination: Eleven illumination settings keep the reticle crisp and visible across a wide range of lighting conditions |
| Compact, Rugged Design:10.4 inches long and 17.9 oz; 30mm tube with capped, low-profile, tool-adjustable turrets and 0.1 Mil click adjustments protect your zero |
| Wide Field of View: 120 ft field of view at 100 yards on 1x with 4 inches of eye relief supports fast target acquisition up close and precise engagement at distance |
What this optic suits
Best for: holding rather than dialling, on a 5.56 or .308 carbine.
Category: low power variable optics. The honest test for any optic is whether its numbers match your rifle and the distances you actually shoot rather than whether it is a good product in the abstract. Work out what ring height you need, what exit pupil the magnification gives you and how much elevation the distance demands, using the calculators on this site, then check this model against those answers.
The closest alternatives at a similar price
Same category, nearest price. An alternative with no stated reason is filler, so each of these is here because it trades something specific against the model above.
Vortex Strike Eagle 1-8x24 Second Focal Plane Riflescope, BDC3 MOA
$307.99 Full specificationsEight power from the same 24 mm objective, which costs you eye box at the top end and buys real target identification at distance. The trade is worth making on a rifle that is not shot fast up close.
Best for: a general purpose carbine that also reaches out
Check price on Amazon
Swampfox Arrowhead 1-10x24 SFP LPVO, Green BDC, 30mm
$399.00 Full specificationsA ten times erector ratio on a 30 mm tube, which is the aggressive end of what this size of scope can do. Expect a tighter eye box at 10x than the same maker gives you at 6x.
Best for: one optic covering close range and identification at distance
Check price on Amazon
Riton Optics 3 Tactix 1-8x24 MOA SFP LPVO Riflescope
$399.00 Full specificationsA daylight bright illuminated centre, which is the specification that actually separates a usable LPVO from one whose dot disappears against a bright background.
Best for: shooting into bright light where a dim reticle washes out
Check price on Amazon
Swampfox Arrowhead 1-6x24 SFP LPVO, Green BDC, 30mm
$299.00 Full specificationsA green illuminated BDC on a 30 mm tube at a price that undercuts the obvious choices. Green reads better than red against foliage for most eyes, which is a real consideration and rarely offered.
Best for: shooting against green backgrounds
Check price on AmazonSide by side
| Model | Price | Magnification | Objective lens | Focal plane | Illuminated reticle | Tube diameter |
|---|---|---|---|---|---|---|
 Primary Arms SLX 1-6x24 Second Focal Plane Gen IV LPVO Riflescope | $349.99 | 1-6x | 24 mm | Second | Yes | - |
| Vortex Strike Eagle 1-8x24 Second Focal Plane Riflescope, BDC3 MOA | $307.99 | 1-8x | 24 mm | Second | Yes | 30 mm |
| Swampfox Arrowhead 1-10x24 SFP LPVO, Green BDC, 30mm | $399.00 | 1-10x | 24 mm | Second | Yes | 30 mm |
| Riton Optics 3 Tactix 1-8x24 MOA SFP LPVO Riflescope | $399.00 | 1-8x | 24 mm | Second | Yes | - |
A dash means the manufacturer does not publish that figure. We leave it blank rather than estimating it.
How we chose
We did not test these optics in person and we never claim to. Picks are researched from manufacturer specification sheets, published optical and ballistic formulas, and the recurring themes in verified owner reviews. Every pick is matched to a real objective diameter, a real tube size, a real ring height or a real exit pupil rather than to a price bracket, and it is placed in the tier where its capability actually belongs. Where a figure is shooter convention rather than a sourced number we label it, and where a manufacturer does not publish a figure we leave it out instead of estimating it.
Sources
- Primary Arms published specifications for the SLx 1-6x24 Gen IV
- Amazon product listing features and current pricing
Frequently asked questions
How much does the Primary Arms SLx 1-6x24 Gen IV cost?
It was listed at $349.99 when this page was last compiled. Optics pricing moves frequently and promotional pricing is common, so treat that as a planning figure and confirm the current price before committing to a purchase or budgeting a whole setup around it.
Is the Primary Arms SLx 1-6x24 Gen IV right for my rifle?
Holding rather than dialling, on a 5.56 or .308 carbine. Beyond that, the honest test is whether it physically fits and whether its numbers match the distances you shoot. Check the ring height its objective needs and the exit pupil its magnification gives before deciding.
Where do these specifications come from?
The manufacturer published figures, taken from the product listing and data sheet. We do not test products in person and we never claim to, so nothing here is a measured result. Where a specification is not published by the manufacturer it is omitted rather than estimated, which is why some sheets are shorter than others.
Will this fit my rifle and my rings?
Check three things in this order. The tube diameter has to match the rings exactly, because a 30 mm ring will not hold a 34 mm tube. The objective bell has to clear the barrel at the ring height you own. And the rail or base pattern on the receiver has to match the mount. Those three account for most returns in this category.
Is it worth buying this rather than the cheaper alternative?
Only if the thing it does better is something you actually need. The alternatives listed above each trade something specific, and on a first setup the money almost always does more good spent on a solid mount, a torque driver and a level than on upgrading the glass by one model.
Researched, not professional advice. This page is compiled from published manufacturer specifications, published optical and ballistic formulas, and owner-review consensus, not hands-on testing. Figures described as a rule of thumb are shooter convention rather than sourced numbers, and they are labelled that way wherever they appear. Ballistic figures come from a point mass model using the ballistic coefficient the maker publishes, so treat them as a starting point and confirm them on paper at a measured distance. Confirm your firearm is unloaded with the action open before you mount, level, torque or bore sight anything. Verify a zero only on a supervised range or a safe, legal backstop, know what lies beyond your target, and follow the law where you hunt and shoot, including rules on land access and permitted cartridges.