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// 29.9.2023 GA4 add to cart // 29.9.2023 GA4 add to cart

Primary Arms 3-18x50 SLX6 FFP

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Primary Arms 3-18x50 SLX6 FFP Details

  • Silver Series from Primary Arms optics offers a great price to performance ratio.
  • There is a wide array of reticles available for this model.
  • Having 6 illumination intensity levels on a riflescope in this price class is exceptional.
  • Primary Arms grants superb warranty terms for their products.


Primary Arms is an American company that is constantly gaining in popularity for two major reasons – offering products of high quality at an affordable price and implementing their own, custom reticles in their optical devices. One of the most popular reticles is ACSS with holdovers for bullet drop, designed for CQB.

In 2019, Primary Arms decided to divide its optics into four tiers, Classic (CLx), Silver (SLx), Gold (GLx), and Platinum (PLx). They chose to do this because their customers had difficulties determining which riflescope belongs to which price class. Primary Arms’ products are now much more organized, which makes work easier for both customers and retailers.

About the series

Silver’ is Primary Arms’ mid-range series of optics, the core of their line-up. As regards price, it is positioned above ‘Classic’ and below the ‘Gold’ series. In this series, Primary Arms has scopes, prism scopes, and magnifiers available. Scopes are of the SFP and FFP type, and there are various lens diameters at disposal. The optics in this tier are priced from 250 € to 600 €. All of them are manufactured in China. They are backed by Primary Arms’ lifetime warranty (10 years). Most of the riflescopes in this series can be purchased with Primary Arms’ famous ACSS reticle.

About the model (SLX6 3-18x50 FFP)

Primary Arms SLX6 3-18x50 FFP is one of the riflescopes from the Silver series. It has been designed for long range tactical shooting, allowing shooters to shoot as far as the 1,000-yard mark. It offers 6 x zoom with 3 x minimal magnification.

3-18x56 has an aluminum black matte one-piece housing. The alloy used is anodized aluminum 6061. The main tube diameter is 30 mm, there is no mounting rail underneath it.

This is a first plane riflescope (FFP), meaning that the reticle size changes with magnification because the reticle is in the front of magnification lenses. This allows the scope to be true at every magnification. The reticle is illuminated and has 6 intensity levels. There is an off switch between each illumination level. The battery used is CR2032.

Primary Arms 3 -18x56 scope are 6 different reticles to choose from:

  • ACSS hud dmr 308

  • ACSS hud dmr 5.56

  • Apollo hud 6.5 Creedmoor (provides ranging (range estimation), bullet drop, and wind holds out to 1000 yards)

  • Athena BPR MIL

  • Hera BRP MOA

  • R-Grid 2B

Reticles that include horseshoe and chevron have illumination limited to these two parts.

3-18x56 scope features exposed tactical turrets with a Zero-lock mechanism. The turrets are of high quality which is very rare in this price range. The parallax can be set anywhere between 10 yards and infinity. The clicks on the riflescope are in milliradians (1 click = 0.1 MIL) or MOA (1 click = ¼ MOA) and it has a true MIL/MIL (or MOA/MOA) configuration. The Fin on the power ring, which acts as a small throw lever, allows for rapid focus adjustment and smooth movement through the magnification range, making the adjustment of the magnification easier.


The 3-18x56 scope comes with objective and eyepiece flip-up covers. The covers are made of plastic and can be removed.

  • 6 reticles to choose from

  • Parallax can be set between 10 yards and infinity

  • 30mm tube

  • Illuminated reticle

  • Audible 0.1 MIL / ¼ MOA clicks; MIL/MIL (MOA/MOA) configuration

  • Black matte one-piece housing

  • FFP configuration

  • Made in China

  • Lifetime warranty (10 years)


The 3-18x56 scope comes with 10 years of warranty. You can read more about the warranty policy here.

Primary Arms 3-18x50 SLX6 FFP Specifications

ManufacturerPrimary Arms
Rifle scopes seriesPrimary Arms Silver Series SLX
Made inChina
In production since2018
Warranty10 years
Variable magnification Yes
Min. magnification.3x
Max. magnification.20.03x
Diopter adjustment -
Lens size diameter. 50 mm
Minimal exit pupil.2.7 mm
Maximal exit pupil.18.05 mm
Minimal field of view.2.26m/100m
Maximal field of view.12.2m/100m
Minimal eye relief.89mm
Maximal eye relief.99mm
Twilight Factor -
Light transmittance -
Fast focus eyepiece type Yes
Type of Turret Tactical - Lockable
Locking turretsNo
Number of Turret Turns MT - Multi Turn
Direction of turret rotationCCW
Elevation - mrad. 16.21mrad
Elevation - MOA.50MOA
Windage - mrad. 16.21mrad
Windage - MOA.50MOA
Elevation in each turn -
Reticle position 1. focal plane - FFP
Reticle illumination Yes
Illumination color Red
Usable at daytime No
Automatic Turn Off No
Size of Dot.0MOA
Parallax setting Adjustable
Parallax adj. Yes - side focus
Parallax adustment range 10 m - Infinity
Length.377.78 mm
Working temperature range-
Power Supply UnitNo
Filled with Nitrogen
Lens coatings Fully Multicoated
Tube size/diameter 30 mm
Mounting rail.No
Scope Rail StandardNo
Type of mount rail No
Mount length.161.31mm
Objective size diameter 57 mm
Eyepiece size diameter 44 mm
Mounting StandardNo
Water proof Yes
Fogproof Yes
Shock proofYes
Built in Range finderNo


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Reviews & Testimonials

Reviews for Primary Arms 3-18x50 SLX6 FFP

5 reviews
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Great Scope By
Awesome scope, I have this spray-painted on my HK MR308 in FDE. I use the one with ACSS HUD DMR reticle. I can highly recommend this scope. Some friends of mine use the BPR Mil reticle and the love it too. I am more into the BDC-reticle. And so far this seems to me to be the best BDC reticle available.

I also own some gold and platinum line Primary Arms scopes - I still love this scope too. The glass is little bit better on the gold line and fantastic on the platinum line. However, the glass is already pretty good with this scope.

(Posted on 10/05/2021)

Great scope and great shop. By
I put this into a cetme family rifle and it fits overkill.
Also this shop service is the most eficent i have seen in the sector. Even with the corona outbrak.
12 of 10 for this people.

(Posted on 07/04/2020)

Wort twice as much! By
Great scope, great reticle, great shop! Thanks

(Posted on 30/08/2019)

Wow!!! By
I own S&B pm2 3-20x50 and Minox ZP5 5-25x56 and didn't expect much, but this scope is worth double as much! Paralaxa and illumination knob, need a strong hand.
The scope has all you need. The ACCS DMR is the krone of the scope, better then PL4F and MR4!

(Posted on 30/08/2019)

Exalent By
Wonderful scope for all ,,even long range shooting and great valve for money .
Well built, very good glass , and no maths to be done when shooting ,thats really the best thing about this scope .

(Posted on 26/05/2019)

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