Prismatic device Primary Arms SLx 5x Micro Prism iR Red ACSS Aurora MIL

SLx prismatic sights combine the speed of target acquisition provided by a reflex/red-dot, the precision of an optical sight, and compact size, which is why they are popular not only with astigmatic shooters but also with marksmen seeking a versatile sight for medium and long-range shooting.

The American brand Primary Arms — renowned for high-quality optical sights, red-dots, prismatic sights, and shooting accessories — stormed the U.S. market by offering products with an excellent price-to-performance ratio. Most products come with a lifetime warranty, which strongly emphasizes confidence in their goods. Primary Arms is also famous for its proprietary ACSS reticle, which helps novice shooters rapidly improve their shooting skills.

Primary Arms — American shooting optics with a lifetime warranty

Features of the prismatic sight Primary Arms SLx 5x Micro Prism ACSS Aurora Mil:

• Compact size and low weight
• optics with multi-layer coatings that improve light transmission
• high-contrast red illumination
• patented ACSS Aurora reticle scaled in milliradians
• a large exit pupil creates a roomy eyebox, allowing comfortable head placement without needing perfect optical alignment,
• a wide field of view that eases aiming at moving targets,
• Daylight Bright brightness mode enables shooting even in intense sunlight,
• 13 daytime brightness settings + 3 night-vision settings,
• a ring for quick reticle focus adjustment,
• red-illuminated aiming mark,
• a durable sealed sight construction provides resistance to fog, rain, and shocks,
• 0.25 MOA turret clicks are tactile and audible, aiding zeroing,
• long battery life on a CR2032 — up to 29,000 hours at medium brightness,
• AutoLive motion sensor on/off technology,
• optional 8-position height adjustment range for mounts including Absolute Co-witness and Lower 1/3,
• etched reticle on glass is ideal for astigmatic shooters and works even without illumination,
• lenses coated with multi-layer anti-reflective coatings,
• anti-glare finish via hard anodizing,
• includes reinforced Picatinny rail mount, optic covers,
• the sight is covered by a lifetime warranty.

Primary Arms SLx 5X MicroPrism is a compact prismatic sight with 5× magnification belonging to the respected SLx line, whose reputation rests on reliability, innovation, and an excellent price-to-performance ratio. In field tests, Primary Arms optics were tested on a SCAR 17 .308 Win, from which over 7,000 rounds were fired without harming the sights. The Primary Arms SLx 5x incorporates an improved ACSS Aurora 5.56/.308 reticle in metric units, etched on premium low-dispersion glass, and a reinforced mounting base that ensures stiffness and reliable attachment to the firearm.

Primary Arms SLx 5x is a prismatic sight with a large — full 5× — magnification that enables easy target identification at longer ranges, while also allowing fast both-eyes-open shooting at close-range targets. Many shooters face astigmatism — a vision condition that causes the aiming point to blur or distort when using a red-dot. That makes aiming especially difficult at small, distant targets. This issue can be solved by replacing a red-dot with a far more expensive holographic sight, a riflescope, or a prismatic sight, which has become extremely popular overseas. Unlike red-dots, prismatic sights with magnification feature a BDC reticle and deliver a much clearer, parallax-free image. They also provide greater precision for longer-range shooting while allowing both-eyes-open aiming with full situational awareness.

Primary Arms SLx 5X MicroPrism — a 5× prismatic sight: an ideal solution for any astigmatic shooter

The sight has a sealed aluminum housing with an IP67 protection rating, providing resistance to fog, rain, and shocks. The sight features a large exit pupil and a roomy eyebox, allowing fast acquisition without requiring exact optical alignment. For this reason the Primary Arms SLx 5X prismatic sight offers a wide field of view and is excellent for dynamic shooting at moving targets when there is not always time for a perfect cheek weld. The proprietary ACSS Aurora Mil reticle is etched on glass, so it is visible at any time of day even without illumination. Beneath the aiming mark there is a metric scale for estimating range and engaging targets at various distances. The aiming mark features a red illumination (horseshoe and chevron) with 13 daytime settings and 3 night-vision settings. The use of the AutoLive motion sensor provides extended battery life — even up to 29,000 hours at medium brightness. After prolonged stillness AutoLive automatically turns off the sight illumination, which is instantly restored when the weapon is moved.

ACSS Aurora is an innovative BDC reticle expressed in milliradians, consisting of an illuminated chevron, ladder-style stadia, 2 bold dots, and enlarged lateral stadia. Thanks to this rich functionality, the shooter can quickly and instinctively apply elevation corrections, make wind corrections, calculate range, and engage targets at varying distances. ACSS Aurora is an intuitive reticle suitable for dynamic close-range shooting and precise longer-range engagement. The ACSS Aurora reticle is a multifunctional yet user-friendly aiming system appreciated by both novice and experienced shooters worldwide.

The Primary Arms SLx 5X MicroPrism features a robust aluminum mount with key steel components, ensuring stable and reliable zero retention. Additional riser plates are available for purchase, allowing the sight to be mounted at the appropriate height in up to 8 combinations.