Primary Arms 1x MicroPrism

The Primary Arms 1x MicroPrism was designed with 13 brightness settings, with 3 night vision settings. It features a wide field of view making it excellent for CQB use. The Micro Prism has an aluminum alloy main body with an anodized hard coat finish. it is fully multi coated, nitrogen purged and IP76 waterproof and dust proof. There are 8 mounting height options from 1.1″ to 2.075″, including absolute co-witness and lower 1/3rd. It is backed by Primary Arms lifetime warranty.

Primary Arms 1x MicroPrism Features

13 settings; three night vision settings (NV1, NV2, NV3). Highest settings are daylight bright.

AutoLive motion sensing on/off technology.

Wide field of view, excellent for CQB use.

Accommodation for anti-reflection devices (ARD sold separately).

Aluminum alloy main body with hard coat anodizing.

Fully multi coated optic

Nitrogen purged.

IP76 waterproof and dust proof.

8 mounting height options from 1.1” to 2.075”, including absolute co-witness and lower 1/3rd

Backed by our lifetime warranty.

Mounting Options

Primary Arms SLX 1x Micro Prism

Bullet Drop Compensation

Primary Arms SLX 1x Micro Prism



Length 2.48”
Weight 7 oz
Objective Lens Diameter 17mm
Exit Pupil 15.6”
Field of View @ 100 yards 144 ft at 1x
Eye Relief 3.6”
Battery Life @ Median Setting 29,000 hr. (Red Reticle )

45,000 hr. (Green Reticle)

Total Windage/Elevation Adjustment 120 MOA
Illumination Partial Red

Partial Green

Click Value 1 MOA
Color Black



More Prism Optics

Additional information

Weight N/A

Black, FDE

Reticle Options


Reticle Color

Green, Red

1 review for Primary Arms 1x MicroPrism SLX

  1. Rated 5 out of 5
    ( 1 review )

    Michael Frazier (verified owner)

    As someone who has owned multiple ACOG’s (TA44, TA33, TA02) and other higher end optics, I was a little nervous about trying a more “budget” option like this one from Primary Arms. Ultimately I wanted an LED mini ACOG, but since Trijicon refuses to make one, I figured I’d reward Primary Arms for doing the R&D and give one a try (green reticle version).

    I’m pleasantly surprised. The build quality was better than I expected, the glass isn’t ACOG quality, but it’s honestly not THAT far off. I’m not a complete optics snob, so it hasn’t bothered me one bit. The reticle is super crisp and definitely daylight bright. It’s relatively lightweight and a super low profile. After reading reviews about compatibility, I’ve paired it with a 3x magnifier and have had great results. Makes this set up very versatile. Overall, I think it’s a winning combination on my MCX and would highly recommend it so far based on my first impressions.

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