[SHOT 2021] Primary Arms SLx 1x and 3x MicroPrism Scopes

Hrachya H
by Hrachya H
Primary Arms SLx 1x Micro Prism SLx 3x MicroPrism (1)

Primary Arms have published their 2021 catalog which includes a number of new products. In this article, we’ll take a look at the new family of compact prism scopes called SLx MicroPrism. These scopes are designed from the ground up and according to Primary Arms, have passed extensive endurance testing during the development such as withstanding 7000 rounds of .308 Win fired through a SCAR-17S. Currently, there are two sights in this product line – the non-magnified SLx 1x MicroPrism and the SLx 3x MicroPrism which has fixed 3-power magnification.

The new SLx MicroPrism scopes come with a variety of Primary Arms ACSS partially illuminated (only the horseshoe and central chevron are illuminated) red and green reticles. Both scopes have 13 reticle brightness settings including 3 night vision modes. The AutoLive motion-sensing technology automatically turns the reticle illumination off when the scope is not used and switches it back on when a motion is detected to extend the battery life. As in the case of many other prism scopes, the reticle is etched, so if the battery dies, you will lose the illumination but not the reticle itself. The battery life is not specified in the catalog.

The Primary Arms SLx 1x MicroPrism has a 3.6″ eye relief and a 38 feet field of view at 100 yards. The windage and elevation are adjustable within a 120-MOA total range and with 1-MOA click values. The overall length of the SLx 1X Micro Prism is 2.48″ (without the lens covers) and it weighs in at 7 oz. This model has the following ACSS reticle options.

Primary Arms SLx 1x MicroPrism reticles

The Primary Arms SLx 3x MicroPrism scope is a bit heavier (8oz) and longer (2.95″). The field of view is 68.4 feet at 100 yards. The eye relief is 2.7″. The reticle can be adjusted within the 80 MOA range, with 0.25 MOA click values. The reticle options of the SLx 3x MicroPrism are shown below.

Primary Arms SLx 3x MicroPrism reticles

The system of mounts and spacers of these new prism scopes allows configuring eighth different mounting heights – from 1.1″ to 2.075″. This will allow having a perfect scope height with a wide variety of weapons as well as cowitnessing the scope with various iron sights and magnifiers.

Primary Arms SLx 1x Micro Prism SLx 3x MicroPrism (5)

One of the main reasons many people prefer a non-magnified prism scope over a red dot sight is astigmatism which does not allow seeing a crisp dot in reflex sights. The compact size and light weight of the 3x prism should also be attractive to those who want to have magnified optics without excessively increasing the weight and footprint of their firearm. What are the reasons why you use prism scopes and what do you think about this new Primary Arms prism scope line?

Primary Arms SLx 1x Micro Prism SLx 3x MicroPrism (2)

The prices are not published at the moment of writing this article.

Pictures by Primary Arms, www.primaryarms.com

Hrachya H
Hrachya H

Managing Editor Being a lifelong firearms enthusiast, Hrachya always enjoys studying the history and design of guns and ammunition. Should you need to contact him, feel free to shoot him a message at Hrachya@TheFirearmBlog.com

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  • Goody Goody on Jan 28, 2021

    Would love to see a fov pic through the 3x whether it's looking at the target or at the inside of a tube.

    • Symphonyofthegods Symphonyofthegods on Jan 29, 2021

      @Goody Yea I have been messaging PA about the FoV but they keep ignoring me lol double that of new Vortex 3x which supposedly manufactured by same OEM

  • SinoSparo SinoSparo on Jan 31, 2021

    How many slots does this use?