Primary Arms has come out with a new Low Power Variable Optic in their SLx line, it’s the 1-6x24mm SFP Gen IV with the Illuminated ACSS Nova Fiber Wire Reticle. The difference between this new 1-6x24 LPVO, and others, is its new fiber wire reticle. The fiber wire produces an actual daylight bright center red dot. The SLx 1-6x24 Nova reticle also has a bunch of other upgraded features when compared to the SLx gen 3's. Let’s go check it out.

This new SLx 1-6x24 comes packed with features. Of course it has 1 power magnification so you can use it like a red dot. Or you can crank it up to 6 power to identify and engage targets at longer distances. To change the magnification, Primary Arms has upgraded the throw lever to their new dovetail style. This new throw lever can be taken out and swapped for different heights, including a fold down style. The magnification ring moves about 180 degrees between 1x and 6 x, which is nice. The SLx 1-6 is still a second focal plane optic, but now has different reticle options, including the Nova Fiber Wire reticle. To zero in the reticle, the SLx 1-6 uses capped turrets that adjust in 0.1 MIL increments. The turrets have a good audible clicks to them. There are also 3 tiny set screws to loosen and set those turrets to a known zero position. The scope weighs in at 17.9 ounces and is 10.4 inches long, which is a good balance for this style of optic.

It’s time to talk about the SLx 1-6’s Nova fiber wire reticle. This Nova reticle is one of the reasons the Gen 4 SLx shines. Using a fiber optic wire allows the Nova reticle to have a center illuminated red dot. I used to complain when companies would say “daylight bright”, not anymore. The red dot inside the SLx 1-6 is BRIGHT. Not only can you see it in direct bright sunlight, but I'm pretty sure it can be seen while aiming it at the sun, but I wouldn’t recommend trying that. The dot is bright enough that it also doesn’t wash out when using a weapon light, a big plus in my book. Because the SLx is an etched reticle, the red dot does not starburst out for those of us that have an astigmatism, something I can’t say for normal red dots. The illuminated dot size measures 0.6 MOA at 1x and 3.6 MOA at 6x. Brightness for the center dot is adjusted on the left side of the scope. It has 11 levels of brightness with only one off position. It is not night vision compatible, the dot is just too bright at level 1 for that. Also included in the reticle are MIL hash marks. The vertical crosshair’s marks are at 1 MIL intervals. There are narrower 0.5 MIL subtension marks between the large 1 MIL ones. These 1 MIL marks decrease in width as you move down the crosshair. This is to estimate a 18” target’s width to help determine what range the target is at. Being a SFP optic, these stadia marks only are accurate at 6x. The horizontal crosshair has marks for wind or travel speed. These are 3,6, and 9 MPH as you move out away from the center dot. The Nova reticle is a great multi-purpose reticle that can range targets or be used as a red dot.

Since the Primary Arms SLx 1-6x24 is now on the fourth generation of upgrades, this means the user gets upgraded glass. This upgraded glass gives the SLx fantastic clarity. To my eye, it compares to the clarity of my GLx 1-6, which is the next higher level of optics in the Primary Arms optics line. Eye relief on the SLx is stated at 4 inches, but it is very forgiving. The eye box is also pretty good for a scope in this class range. These two specs actually make it very easy to find the optic when shouldering the rifle.

I mounted up the SLx 1-6x24 Nova fiber wire on my purple AR15. For this particular rifle, the SLx is great. It is super clear and easy to pick up the reticle. That fiber wire makes the center dot so bright that I can actually use the scope like a red dot at 1x, in bright sunlight. The dot is so bright that I had to turn the brightness way down to get a good picture of the reticle, if that tells you anything. The turret adjustments give me good clicks, so when I turn them, I can tell when they moved. My only complaint about the SLx is the throw lever. It is too stiff for my liking. Even though it’s stiff, the throw lever’s movement is super smooth.

If you are even remotely looking into getting a LPVO, the Primary Arms SLx 1-6x24 Nova reticle needs a look. The glass clarity is great. The reticle is top notch for a “one optic” rifle. Plus that red center dot has got to be one of the brightest of any LPVO in this price range. I would encourage you to go take a look at the SLx 1-6 Nova from Primary Arms. It might be one of the best LPVO’s in its price range

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

Low power variable optic with a super bright red dot

Target Market:

Those wanting a LPVO that is actually daylight bright

FNBs (Features & Benefits of this product):

Integrated Magnification Throw Lever
ACSS NOVA Fiber Wire Reticle
Battery Life: Up to 500 hours
Magnification: 1x – 6x
Second Focal Plane (SFP)
Objective Lens Diameter: 24mm
Exit Pupil: 10.6mm – 3.8mm
Eye Relief: 4 in.
Total Windage/Elevation Adjustment: 120 MOA
Field Of View @100 Yards: 120 ft. – 20 ft. (Low – High)
Illumination: Red, 11 Illumination Settings
Click Value: 0.1 MIL
Length w/o Lens Covers: 10.4 in.
Weight w/ Included Battery w/o Lens Covers: 17.9 oz.
Lifetime Warranty

What other aesthetic options or finishes are available?

Different Reticles

What others are saying?:

5/5 Stars at PrimaryArms.com

THE NEW STANDARD FOR BUDGET LPVO'S

Absolutely lives up to the hype, punches well above its price point. Yeah, it's going to get compared a lot to the PST Gen 2, and I can honestly say the overall glass quality and image/FOV/Reticle, and illumination are frankly better than the Vortex. Still doesn't quite match the Vortex in build quality or external controls, and the eyebox is a tad less forgiving, but this Nova scope is hands down the best LPVO on the market under $500.