Primary Arms SLx 4-14x44mm FFP Rifle Scope - Illuminated R-Grid 2B

Manufactured by Primary Arms
MPN: 610090
Manufactured by Primary Arms
8 Reviews

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The SLx optics are the heart of our lineup. The trusted optics that have built our reputation through the years. Although many SLx optics will be familiar to Primary Arms fans, we are always pushing forward with new generations and adding even more options in response to the demands of our loyal customers.

The Primary Arms 4-14x44mm illuminated rifle scope was our first step into first focal plane (FFP) optics and remains one of the most cost-effective options on the market. Having a reticle stay 'true' through the entire magnification range opens a world of possibility for hunters, marksman, and competitors everywhere. Add in "built like a tank" construction and a 3-year warranty, and it's easy to see why this scope is so popular.

  • R-Grid 2B reticle combines a horseshoe and chevron center reticle for close quarters snap shooting with a MIL-DOT grid for precise holds
  • First Focal Plane reticle stays true at all magnifications
  • 6-illumination settings powered by a common CR2032 battery
  • High strength aircraft grade aluminum body
  • Side-adjustable parallax and fast focus eye piece for crisp view of the target and reticle
  • 30mm main tube compatible with your favorite rings and mounts
  • Tactile and audible 1/10 MIL windage and elevation adjustments
  • Exposed tactical style turrets with Zero Reset
  • Shockproof, waterproof, and fog resistant
  • Parallax adjusts from 15 yards to infinity!
  • Excellent glass clarity

At the heart of the 4-14x44mm rifle scope is our new and improved R-Grid 2B reticle! We kept the popular horseshoe and chevron, allowing for fast target engagements at close quarters, but have replaced the old line grid with a new MIL-dot matrix allowing for more precise holdover references with even less clutter. For especially long range shooting, the dot matrix extends a full 15 MILs below the center of the reticle, allowing for not just holdovers, but faster recovery should the first shot miss. Spot the splash in the grid and use that to orient for your follow up! Precise 0.1 MIL subtensions and our fantastic auto-ranging system round out this excellent new edition of the popular and effective R-Grid reticle!

A scope that won’t hold up to real world use won’t do any good, so we built our 4-14x44mm FFP tactical rifle scope to last with a heavy-duty aircraft grade 6063 aluminum body and 30mm main tube. Waterproof, shockproof, and fog resistant, this scope is perfectly at home on an AR-15 or your favorite hunting rifle. Even better, the MIL/MIL turrets track correctly through their full 17.5 MIL adjustment range, allowing for confident adjustments for shooters who prefer to count their clicks. With clear glass, heavy duty construction, and a true first focal plane reticle that can be leveraged at every magnification, the 4-14x44mm rifle scope from Primary Arms offers shooters a versatile and effective rifle scope, covered by our 3-year warranty!
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Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Click Value0.1 Mil
Exit Pupil DiameterLow: 11.20 mm / High: 3.30 mm
Eye ReliefLow: 3.22 in / High: 3.14 in
Field View 100Low: 27.20 ft / High: 7.85 ft
Focal PlaneFirst Focal Plane
Length12.9 in
Maximum Magnification14
Minimum Magnification4
Night Vision CompatibleNon-Compatible
Objective Diameter44mm
ReticleR Grid 2B
Reticle TypeMRAD
Total Elevation Adjustment17.5 MIL
Total Windage Adjustment17.5 MIL
Tube Diameter30mm
Weight25.2 Oz
  • NEW Primary Arms R-Grid 2B Reticle
  • NEW! Primary Arms R-Grid 2B Reticle 4-14x44mm FFP Scope!
  • Range Test of the New Primary Arms R-Grid 300 to 800 Yards
  • BEST Long-Range Scope UNDER $300

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

8 reviews

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A classic reborn with awesome upgrades.


Primary Arms brings back a classic reticle with awesome upgrades. The R-Grid 2B has clearer glass than the original with less blurriness in the edges. The reticle has thinner, sharper lines, and the windage hold over dots allows you to see more of the target. The 0.5 mil vertical drop dot helps take up some of the dead space in the reticle which is a huge plus for NRL22 purposes. I am very pleased with the upgrades and as usual the scope is built like a tank.

Excellent optic!


One of the best value's for the price on the market. This scope is easily as good as or better than others that cost more than twice it's price. Great glass and plenty durable.

Just Get One - You'll Absolutely Love It

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This has to be one of the better purchases I have made for a variety of reasons. Optical clarity on this scope is fantastic. The reticle design is so easy to use and ever so useful. Within 10 minutes I was zeroed at 100 yards and testing loads. The turrets are very precise with a nice audible and tactile click to them. I messed with them a bit and return to zero was spot on. I also loaded the new R Grid 2B reticle in Strelok Pro and so easy to pop 6 inch steel at 300. I've owned some very high end optics and this is a steal for the quality and value built into it. I would buy another one in a heartbeat for any AR build.

Great Scope!

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This scope is incredible! I have it mounted on my .308 Ruger scout rifle in the traditional location. The glass is clear. The adjustment clicks are firm and it's built like a tank. I usually dial for elevation when shooting long range but so far out to 880 yards I've only used the reticle. Today I went five hits for five shots on steel at 650 yards followed by a first round hit on steel at 880 yards. Outstanding scope comparable to scopes two or three times the price. PA you've hit it out of the park with this one.

Long Distance Shooting Made Easy


Loooooove this thing. First off, I'm a huge fan of milrad reticles. So that right there peaked my interest, but now that I've been able to spend some time with it, quite honestly, it kind of blows my mind with how perfect this optic is. The fact that I can use the grid holdovers without having to adjust the knobs makes target acquisition suuuuper snappy when I'm on the go shooting from 1000+ yards out. A HUGE plus for someone like me who would rather spend more time pulling the trigger than turning knobs. Combine that with glass that makes everything down range clean, clear, and crisp - this makes long distance shooting absolutely painless. For the money, it just can't be beat. LOVE it.

Super Scope for Mid to Long Range Tactical Rifle!

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Best Deal out there on a Mid-Range Scope(600-1000 yards). Good Quality Glass & Accurate Tracking. Zero'd my 18"PSA .223 Wylde at 100 yards with 77 grain IMI Razor-Cores(using the Chevron Tip). Come-up an additional 5 clicks(.5mils) and use the Precision Dot located just below the Chevron. At 600 yds. my normal come-up(4.6 mils) with .1 mil spin drift is spot on. For longer Range there is plenty of elevation left to dial(even with a 0 MOA Mount) plus an additional 11 Mils in the Reticle. Using the 1x per 100 yards this scope is easily good to 1400 yards with a 1 MOA High Powered Rifle.

600 Yard Texas State Championship Match Winning Precision!

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I used my PA R-Grid 2B to win the 2019 Texas State Rifle Association(TSRA) Mid-Range(600 Yard) Prone Tactical Rifle Championship. This thing Rocks!

Exceeded my expectations. I will be ordering another

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I was a bit hesitant to order an FFP scope in this price range. Bottom line is that the scope is great. Clear glass, well made, holds zero, accurate mil adjustments, easy turret changes, Etc. Everything about the scope is comparable to its high dollar competitors. The R-GRID reticle is amazing for long-range shots. One of the few times where the product exceeded my expectations. If you are on the fence about ordering or not, you won't be disappointed. I had budgeted $600 for optics for this particular build and I don't think that I could have gotten a better scope, even if I had spent the entire budget. A great quality scope and at the price it's an amazing value!!