Primary Arms GLx RS-15, the red dot with the multi-reticle select feature – Now available in EU via Ferkinghoff International

The Primary Arms GLx RS-15 red dot features an anodized black matte 7075 aluminum housing and a 26x20mm window with multicoated lens. The CR2032 battery is top-loading, so that you don't have to remove the optic from your gun.

Designed in the USA and precision-manufactured in the Philippines: the GLx RS-15 reflex sight from Primary Arms Optics was presented at the IWA 2024 and is already available in Europe – from Ferkinghoff International at for 475 euro. Primary Arms' Gold Series (GLx) label is their mid-tier optics line and offers distinctive performance features such as outstanding glass quality and edge-to-edge sharpness, an innovative reticle and proven robustness, at the right price point. In detail, with the GLx RS-15 comes the patented ACSS Vulcan reticle with 250 MOA outer ring that extends outside of the visible lens, and a 3 MOA dot in 13 selectable brightness levels (3 for night vision). 

With a larger 26x20-mm window for precise target acquisition and fast reaction times, and rugged 7075 aluminum construction, the Primary Arms GLx RS-15 was specially developed for dynamic shooting, but is also ideal for hunters and professional gun users, of course. It fits the popular C-More footprint for out-of-the box compatibility with a large variety of pistol slides and adapter plates (including SIG P320 X5 Legion and GLOCK MOS models). 

VIDEO: a guide on the ACSS Vulcan reticle

Primary Arms GLx RS-15 and the Vulcan reticle – all details

Primary Arms: how the ACSS Vulcan reticle of the GLx RS-15 works. If your aim drifts off target, the edges of the circle come into view, guiding your aim back to center.

More about the ACSS Vulcan reticle: the outer ring is only visible when the gun is tilted and provides quick information on the point of impact. In fact, it provides a quick reference to where your dot is allowing you to quickly adjust and get your reticle on target and shooters can always see the correct aiming position. Anyway, you can also select a red dot-only mode. (If you prefer so, the GLx RS-15 Mini Reflex is even available in a version without the Vulcan reticle option.)

The 0.5 MOA windage and elevation adjustments allow for precise zeroing and improved accuracy, with a maximum total adjustment range for both windage and elevation of 87 MOA.

The GLx RS-15 is powered by a top-loading CR2032 battery, so that you can quickly change batteries without having to remove the optic. Thanks to Primary Arms' Autolive functionality that automatically shuts the reticle off when set down and turns on the instant motion is detected, battery life is up to 5,000 hours, depending on the brightness setting. The brightness adjustment buttons are side mounted for ease of manipulation.

Thanks to the C-More footprint, the Primary Arms GLx RS-15 red dot is compatible with a large variety of pistols, such as the SIG P320 X5 Legion showed here. 

Featuring an anodized black matte 7075 aluminum housing, the red dot is waterproof, fogproof and shockproof to ensure reliable functionality in any condition and comes with the Primary Arms comprehensive lifetime warranty. 

Primary Arms GLx RS-15 specs and price

Primary Arms
Window Size: 


Dot Size:
3 MOA + 250 MOA ACSS Vulcan reticle

47 mm

Battery Life:

1,000-5,000 hours (depending on brightness setting)

Battery Type: 

CR2032 3V Lithium Coin

Click Adjustment Value:

0.5 MOA

Brightness Settings:



7075 aluminum, black anodized

Night Vision Compatible:


ACSS Vulcan

314 g

Price (MSRP):

475 euro

More information about the U.S. optics manufacturer Primary Arms

Primary Arms optics backed by passion, knowledge and now also first-class customer service for Europe.

Primary Arms is a U.S. optics manufacturer that was founded 15 years ago. During this time, the company has risen rapidly. The team of experienced shooters, enthusiasts and servicemen from Texas has set themselves the goal of offering high-quality optics at good prices. Primnary Arms has developed into a real alternative to the established optics manufacturers. Team Ferkinghoff International is pleased to be able to offer the quality products from Houston – from red dot sights to specific riflescopes – in Europe with immediate effect. In addition to sales, Ferkinghoff now also offers service.

Further information on the new red dot sight is available on the Ferkinghoff International website and of course from the manufacturer Primary Arms.

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Here you can buy the Primary Arms GLx RS-15 mini-reflex online at Ferkinghoff International:

Primary Arms GLx RS-15 Mini Reflex ACSS Vulcan rot
475 euro