Prism device Primary Arms SLx 3x Micro Prism iR Red ACSS Raptor 7.62/300BO Yard

SLx prism devices combine the quick target acquisition of a red dot sight, the precision of an optical device, and compact size. Therefore, they are popular not only among people with astigmatism but also among shooters seeking a universal device for short- and medium-range shooting.

The American brand Primary Arms, known for its high-quality optical devices, red dots, prism optics, and shooting accessories, has rapidly conquered the US market by offering products with an outstanding price-to-quality ratio. Most items come with a lifetime warranty, demonstrating great trust in the brand’s products. Primary Arms is also famous for its proprietary ACSS reticle, which helps beginners quickly improve their shooting skills.

Primary Arms — American shooting optics with a lifetime warranty

Features of the Primary Arms SLx 3x Micro Prism ACSS Raptor 7.62/.300BLK device:

• Compact size and lightweight design,
• multilayer-coated optics for enhanced light transmission,
• patented ACSS Raptor reticle calibrated for 7.62/.300BLK ammunition (in yards),
• generous 69 mm eye relief providing a comfortable head position without perfect alignment,
• 12.6/100 m field of view for easier tracking of moving targets,
• Daylight Bright mode for use under strong sunlight,
• 13 brightness settings for daylight + 3 for night vision,
• fast-focus adjustment ring,
• red-illuminated aiming point,
• sealed and durable construction resistant to fog, rain, and impact,
• crisp and audible 0.25 MOA turret clicks for easier zeroing,
• long battery life — up to 29,000 hours on a CR2032 battery (medium brightness),
• AutoLive motion sensor for automatic on/off operation,
• 8-level mounting height adjustment (Absolute Co-witness, Lower 1/3, etc.),
• weighs only 225 g with high mount,
• etched glass reticle ideal for astigmatism and visible even without illumination,
• wide 80 MOA adjustment range (vertical and horizontal),
• multilayer anti-reflective coated lenses,
• matte anodized anti-glare finish,
• includes reinforced Picatinny mount and lens covers,
• lifetime warranty included.

Primary Arms SLx 3X MicroPrism is a compact 3× prism device from the acclaimed SLx line, known for reliability, innovation, and exceptional value. In field testing, the optics survived over 7,000 rounds fired from a SCAR 17 .308 Win without damage. The SLx 3x features an updated ACSS Raptor 7.62/.300 reticle etched on premium low-dispersion glass, along with a reinforced mounting base for strength and zero retention.

The SLx 3x prism device provides easy target identification at medium ranges and enables fast two-eyes-open shooting at close distances. Many shooters with astigmatism experience blurred or distorted dots when using red dots. This issue can be solved by switching to a holographic sight, a variable-power scope, or a prism device. Unlike red dots, prism devices with magnification use BDC reticles that deliver a much clearer parallax-free image, allowing precise shooting at longer ranges while maintaining situational awareness.

Primary Arms SLx 3X MicroPrism — a 3× prism device ideal for shooters with astigmatism

The sealed aluminum housing rated IP67 ensures resistance to moisture, fog, and shocks. The large exit pupil and generous 69 mm eyebox allow quick alignment without perfect head positioning. Thus, the SLx 3X provides a wide field of view and excels in dynamic shooting at moving targets. The proprietary ACSS 7.62/.300BLK reticle is etched on glass and visible even without illumination. Beneath the chevron is a distance scale for range estimation and ballistic compensation. The red illumination offers 13 daylight and 3 night vision levels. The AutoLive motion sensor extends battery life up to 29,000 hours. After inactivity, illumination turns off automatically and instantly reactivates when the weapon is moved.

The ACSS Raptor reticle is calibrated for 7.62/.300BLK ballistics. The central thin chevron (inverted V) is surrounded by a thicker horseshoe, with range marks below for distance estimation and precision shots. This intuitive reticle excels in dynamic short-range and precise mid-range shooting. ACSS is a simple yet powerful aiming system appreciated by both novice and experienced shooters. The markings are expressed in meters for easier use.

The Primary Arms SLx 3X MicroPrism includes a robust aluminum mount with steel hardware for secure zero retention. Optional spacers allow eight height configurations.