Primary Arms SLx 1-6x24 SFP ACSS Aurora Gen IV

In for review is something I think is the coolest thing since sliced bread, electric car windows and air conditioning. As you can guess we have an optic from Primary Arms (PA). This is their SLx 1-6x24 second focal plane scope. This is a Gen 4 version of their Low Power Variable Optic (LPVO). Primary Arms sent this to me and I have been sitting on it until I had just the perfect rifle to put it on. After some soul searching, I bought a Mossberg MVP Patrol rifle in .300 black out (BO). This scope is made for the .300 BO or 7.62x39 cartridges.

A little about the optic before we get into how it performed. It has their illuminated ACSS reticle. This optic was designed with the carbine user in mind. It has an integrated throw lever, clear glass, and a BDC reticle. It also has a 30mm tube, click values of 0.1 mil, and a generous eye relief of 4 inches. It runs off of a CR 2032 battery and the magnification is 1-6 power. If you run night vision it will work with that as well. It has 120 mils of adjustment for windage and elevation. The turrets are capped and low profile.

So mounting this optic is pretty straight forward, especially if using one of Primary Arms mounts. I adjusted the reticle to align with my cant and eye relief. The first thing I noticed was the clarity of the glass. The second was the ease of adjustment of the throw lever. Adjusting the brightness is easy and tactile. There are 11 settings of brightness and 2 are night vision. The field of view at 1x is 120 feet at 100 yards and at 6x is 20 feet.

Now on to the reticle, this is where things got interesting and fun. The optic comes with two manuals, the first is your basic setup and the second is how to use the reticle. You will notice that when you first look into the optic, there is an illuminated upside down V or chevron. The Aurora reticle is a BDC reticle for the .300 BO and has a ranging reticle out to 600 yards. Now I have no notion of trying to shoot my .300 BO out that far, but it is nice to be able to zoom in and range your target based on a 5’10” person. The stadia marks are easy to read and are clear at any magnification. If you read the manual, it will help you understand how the reticle works.

The reticle is based in 25 yards increments, assuming you dialed it in at 50 yards. It has a chart in the manual with all the common loads from most of the major ammo makers, both supersonic and subsonic. If you don't happen to have one of these particular loads, it is still pretty easy to get on target and paper. I dialed the PA 1-6 in at 50 yards. I ran a bunch of Ammo Inc 162 gr loads through the bolt gun and had a suppressor on the end of it. It was an absolute tack driver at 50 yards and the optic made it very easy to see the holes at that distance. At 100 yards picking up an 18” target was easy and you could definitely see the bullet impacts. The overall clarity was great. I went to subsonic rounds next. I used the chart to re-zero my optic to what the chart indicated, and it was spot on to within an inch or so out to 100 yards. I figure for a 300 blackout, that is pretty good shooting with subsonics. So if you use the chart in the manual, you will be close on target. This also depends on your barrel length and so on.

For the overall quality of the Primary Arms scope, and user ability, I have to say that this is probably one of the easiest and most natural scopes you can use. Now I did most of my shooting on 6 power and from a bench. I did shoot some at 1 power standing. I intend to do more this way because this is going to be my new hunting rifle here in Tennessee. The optic lends itself to be friendly close up and at hunting distances, especially for myself in a thicker wooded area. I also believe this optic would be great on a MSR. You can run it like a red dot or you can shoot for distance, if you so choose. With the right ammo, the 300 blackout is capable of 300 yard shots with this optic. With the ranging ability of the Primary Arms SLx 1-6 gen IV, it would be just fine for that purpose.

Firearms Insider Reviews - Key Points

Claim to Fame:

LPVO with a reticle specifically made for the 300 black out or 7.62x39 rifles

Target Market:

Those wanting a dedicated .300 blackout or 7.62x39 LPVO

FNBs (Features & Benefits of this product):

Fully Upgraded Optical System
Integrated Magnification Throw Lever
ACSS Aurora 7.62 Yard Reticle
Magnification: 1x – 6x (Min – Max)
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.
Scope caps included

What other aesthetic options or finishes are available?

Various reticles

What others are saying?:

GREAT OPTIC FOR A REASONABLE PRICE

by Noah S.

Have a little over 2100 rounds on this optic between four different shooting sessions because I really wanted to give it a good test for the average shooter. The glass is very clear and crisp compared to most other optics of this price range. The reticle brightness settings give you a good range of options for different weather and daylight conditions. It’s ran right along side my ACOG also purchased from Primary Arms. Obviously I’m not betting my life on this optic that same way I would an ACOG, but if you need an optic that works and is affordable to the average shooter and is made by a company that stands behind its, work this is it. This isn’t a paid add and is my honest review for the short time I’ve had it.

GREAT VALUE

by Joe

Bought this to go pig hunting with a .300 AAC BLK. Worked like a champ. I dropped it on the ground and no loss of zero. Rugged scope for the price. Illumination works well. The reticle could be a bit larger but that is personal preference. Overall I am very pleased and can recommend it.