Prismatic principle Primary Arms SLx 1x Micro Prism iR Green ACSS Gemini 9 mm

SLx Prism Sights combine the fast target acquisition of a red dot, the precision of an optical scope, and compact size. They are popular among astigmatic shooters and those seeking a versatile short- and medium-range optic.

The American brand Primary Arms, known for high-quality optics, red dots, prism sights, and accessories, has captured the U.S. market with excellent price-to-quality ratio. Most products come with a lifetime warranty, demonstrating trust in their reliability. Primary Arms is also known for its proprietary ACSS reticle, helping beginners quickly improve shooting skills.

Primary Arms — American optics with a lifetime warranty

Primary Arms SLx 1X MicroPrism is a compact prism sight with true 1× magnification from the SLx line, valued for reliability and excellent price-to-quality ratio. Field-tested on SCAR 17 .308 Win, over 7,000 rounds were fired without damage.

Features of the Primary Arms SLx 1X MicroPrism ACSS Gemini:

• Compact size and lightweight
• multi-coated optics for improved light transmission
• patented ACSS reticle for 9 mm ammo
• large exit pupil (50–152 mm) for comfortable head positioning without precise alignment
• field of view 25/100 m for moving targets
• Daylight Bright mode for shooting in sunlight
• 13 daylight + 3 night brightness levels
• quick focus adjustment ring
• red illuminated reticle
• durable sealed construction, resistant to fog, rain, and shocks
• 1 MOA tactile and audible turret clicks
• long battery life — up to 29,000 hours at medium brightness
• AutoLive motion sensor for automatic on/off
• 8-step height adjustment (Absolute Co-witness and Lower 1/3)
• high mount weighs 215 g
• etched glass reticle suitable for astigmatic shooters and usable without illumination
• 120 MOA adjustment range horizontally and vertically
• multi-coated anti-reflection lenses
• hard-anodized anti-glare finish
• reinforced Picatinny mount included
• lifetime warranty
• waterproof and dustproof IP67 nitrogen-filled body prevents fogging

Features include improved ACSS Gemini 9 mm etched on premium glass, AutoLive system for extended battery life, and reinforced mount for reliability.

SLx 1x allows fast both-eye shooting at close range. Astigmatism blurs red dot points, which prism sights with a BDC reticle and clear parallax-free image solve, enabling precise aiming and binocular awareness.

Sealed aluminum IP67 body, 10.3 mm exit pupil, and generous eyebox allow quick aiming. ACSS 9 mm reticle etched on glass, visible without illumination. Green illuminated reticle (horseshoe and chevron) with 13 daylight and 3 night levels. AutoLive extends battery life — up to 29,000 hours.

ACSS Gemini reticle calibrated for PCC 9 mm ballistics. Thin central chevron surrounded by thick horseshoe with point markers for bullet drop. Intuitive and functional for dynamic short-range and precise medium-range shooting.

SLx 1X MicroPrism has sturdy aluminum mount with steel components for stable zero. Optional risers allow 8 mounting height combinations.

Sight height depending on mount:

• No riser — 27.94 mm
• + low cantilever — 35.81 mm
• + medium cantilever — 38.99 mm
• + high cantilever — 41.66 mm
• + straight riser — 38.99 mm
• + straight riser + low cantilever — 46.86 mm
• + straight riser + medium cantilever — 50.04 mm
• + straight riser + high cantilever — 52.71 mm