Prismatic device Primary Arms GLx 2x ACSS CQB M5 5.56/.308/5.45

GLx prism devices combine the target acquisition speed of a red dot sight, the precision of an optical device, and a compact size. They are popular not only among users with astigmatism but also among shooters seeking a versatile device for short- and mid-range shooting.

Primary Arms, an American brand known for high-quality optics, red dots, prism devices, and shooting accessories, quickly conquered the U.S. market by offering an excellent price-to-performance ratio. Most of its products come with a lifetime warranty, demonstrating strong confidence in their quality. Primary Arms is also famous for its proprietary ACSS reticle, which helps even novice shooters improve accuracy quickly.

Primary Arms — American shooting optics with a lifetime warranty

Features of the Primary Arms GLx 2x ACSS CQB M5 5.56/.308/5.45 prism device:

• Glass-etched reticle that works with or without illumination
• 11 brightness levels — 3 night-vision compatible and 2 DAYLIGHT BRIGHT
• 89 mm eye relief forgiving to shooting position errors
• CR2032 battery provides up to 20,000 hours of operation
• Wide 14 m field of view at 100 m
• Patented ACSS CQB M5 reticle calibrated for 5.56 NATO, 5.45×39 mm, 6.8 SPC, 6.5 Grendel, and some .308 Win rifles
• Quick-focus adjustment ring
• Sealed, fog-, rain-, and shock-resistant construction
• 0.25 MOA click-adjustment turrets
• Lightweight 135 mm aluminum body
• Compatible with mini-ACOG mounting standard
• Anti-reflective anodized finish
• Includes reinforced Picatinny mount and three risers of different heights
• Covered by a lifetime warranty

After rigorous testing, the GLx series optics received a Silver Award from the National Tactical Officers Association and the “Best CQB Optic” award in the Ballistic’s Best 2020 Editors' Selects Awards. These recognitions highlight innovation, reliability, and design excellence. GLx optics combine advanced technology, durable materials, and affordable pricing, making them a great alternative to more expensive brands.

A major innovation of the GLx series is the AutoLive motion-sensor illumination and premium low-dispersion glass. The Primary Arms GLx 2x Prism Scope offers a compact form, fixed 2× magnification, and an etched-glass ACSS reticle that operates with or without illumination.

The Primary Arms GLx 2x is a fixed 2× prism device that enables quick identification of medium-range targets and both-eyes-open shooting at close range. For shooters with astigmatism who struggle with blurry red dots, it’s an ideal solution — outperforming many red dots and even holographic or LPVO devices.

Primary Arms GLx 2x — the ideal prism device for astigmatic users

Unlike red dots, prism devices with magnification feature a BDC reticle, clear parallax-free images, and higher long-range precision while maintaining full situational awareness. The 135 mm aluminum housing (312 g) ensures durability and resistance to fog, rain, and shock. With AutoLive motion activation, battery life reaches up to 20,000 hours — illumination turns off when idle and instantly reactivates with movement.

The ACSS reticle offers 11 brightness settings — 3 for night vision and 2 for daylight use — ensuring optimal contrast and fast target acquisition without eye strain.

ACSS CQB M5 is Primary Arms’ proprietary reticle calibrated for 5.56 NATO, 5.45×39 mm, 6.8 SPC, 6.5 Grendel, and .308 Winchester. Its central chevron and horseshoe design ensure fast and precise target acquisition, even for moving targets. The BDC scale allows bullet-drop compensation up to 457 meters.

The second-generation devices feature a robust aluminum mount with steel key parts, ensuring rock-solid zero retention. The kit includes the prism device, a Picatinny base, and three height risers.