Prismatic device Primary Arms SLx 1x Micro Prism iR Red ACSS Cyclops Gen II FDE

SLx prism scopes combine the quick target acquisition of a red dot, the precision of a riflescope, and a compact form factor. That’s why they’re popular not only among shooters with astigmatism but also with those seeking a versatile optic for short- and mid-range shooting.

The American brand Primary Arms, known for its high-quality optics, red dots, prism scopes, and shooting accessories, has rapidly conquered the U.S. market thanks to its excellent value for money. Most of the brand’s products come with a lifetime warranty, underscoring confidence in their reliability. Primary Arms is also famous for its proprietary ACSS reticle, which helps even novice shooters quickly improve their marksmanship skills.

Primary Arms — American shooting optics with a lifetime warranty

Features of the Primary Arms SLx 1x Micro Prism ACSS Cyclops Gen II:

• Compact size and lightweight construction,
• multi-coated optics for improved light transmission,
• patented ACSS Cyclops Gen II reticle calibrated for 5.56 / .308 / 7.62×39 / .300 Blackout SUB ammunition,
• long eye relief (50–152 mm) creating a wide eyebox and comfortable head position without perfect alignment,
• 25 m/100 m field of view makes it easier to track moving targets,
• Daylight Bright mode for use in bright sunlight,
• 13 daylight brightness settings + 3 night vision settings,
• fast focus ring for reticle clarity,
• red illuminated aiming point,
• sealed housing resistant to fog, rain, and impact,
• audible and tactile 1 MOA turret clicks for easy zeroing,
• long battery life — up to 29,000 hours at medium brightness,
• AutoLive motion-sensing power management system,
• 8-position adjustable mount (Absolute Co-witness, Lower 1/3, etc.),
• lightweight — only 215 g with the high mount,
• etched-glass reticle ideal for astigmatic shooters, functional even without illumination,
• wide 120 MOA windage and elevation adjustment range,
• multi-layer anti-reflective coated lenses,
• matte hard-anodized anti-glare finish,
• IP67 nitrogen-purged aluminum housing prevents fogging and seals against dust and moisture,
• reinforced Picatinny mount included,
• covered by a lifetime warranty,
• military-grade FDE (flat dark earth) finish.

Primary Arms SLx 1X MicroPrism ACSS Cyclops is a compact 1× true-magnification prism scope from the renowned SLx line, known for its reliability, innovation, and superb value. In field testing, Primary Arms optics withstood over 7,000 rounds fired from a SCAR 17 .308 Win without losing zero.

The SLx 1x model features an upgraded ACSS 5.56 reticle etched on premium low-dispersion glass, AutoLive illumination technology, and a reinforced mounting base ensuring rigidity and reliability on the firearm.

The Primary Arms SLx 1x is ideal for fast both-eyes-open shooting at close range. For shooters with astigmatism, who may see a blurred red dot with standard reflex sights, this prism optic provides a crisp, parallax-free image and greater precision at medium distances.

Primary Arms SLx 1X MicroPrism — the perfect choice for shooters with astigmatism

Unlike red dots, prism scopes feature a BDC reticle, a much clearer parallax-free image, and enhanced accuracy at longer ranges, while still allowing both-eyes-open shooting and situational awareness.

The sealed IP67-rated aluminum housing resists moisture, dust, and shock. With a large 10.3 mm exit pupil and generous eyebox, the optic allows for quick sight alignment even without a perfect cheek weld. The proprietary ACSS Cyclops Gen II 5.56 / .308 reticle is etched on glass and remains visible even without illumination. The red illumination (horseshoe and chevron) offers 13 daylight and 3 night vision brightness levels. The AutoLive motion sensor extends battery life up to 29,000 hours by automatically turning the illumination off when idle and instantly reactivating it upon movement.

The ACSS Cyclops Gen II reticle is optimized for the ballistics of 5.56, .308, 7.62×39, and .300 Blackout SUB, offering an intuitive aiming system for both close-quarters and mid-range precision shooting.

The Primary Arms SLx 1X MicroPrism includes a durable aluminum mount with steel hardware for solid zero retention. The set also comes with two risers (Absolute Co-witness and Lower 1/3) for customizable mounting height.