Review: Holosun 507K X2 Red Dot Sight

Value and features in a hard to beat package.

posted on April 18, 2024
Holosun 507K X2

Holosun offered me a chance to try out a 507K X2 red dot sight, which I mounted on my Springfield Armory Hellcat Pro, which recently became my EDC after retiring my optic-less Smith & Wesson Shield after nearly a decade of service. This was not the first red dot I’ve tried on a gun - mainly on my Glock 17 - but (spoiler alert!) I don’t think I’m being dramatic when I say it’s the best sight I’ve tried so far.

First things first, setting up the Holosun 507K X2 was a breeze. Surprisingly, it didn’t come with a mounting plate, so I ordered one online. A day later, I was up and running, as it mounted perfectly onto the slide, and the sight aligned effortlessly. The process took me less than ten minutes.

Now, let’s talk about the reticle. The Holosun 507K X2 features a crisp 2-MOA dot with a 32-MOA circle for quick acquisition. The multiple reticle options, including a circle-dot combination and just the circle, provide versatility for various shooting scenarios. Seeing as I’m, shall we say, no longer a spring chicken and neither are my eyes, I like the reticle option to make target acquisition just a bit faster and easier. The reticle is incredibly clear and precise, making it easy to see where you’re shooting, whether at close range or stretching out to longer distances.

507k X2 on gun

One thing that really stood out to me was how well the Holosun 507K X2 sits on the Hellcat Pro slide. This red dot sight feels incredibly solid and rugged despite its compact size. I didn’t experience any shifting or loosening of the sight, even after putting a couple hundred rounds downrange. This reliability is crucial, especially in a defensive or competition setting where every shot counts. The sight maintains zero consistently, even after extensive use. The manual brightness settings are excellent and easy to adjust.

Battery life is another area where the Holosun 507K X2 shines. A CR1632 battery powers the sight and boasts an impressive 50,000 hours of continuous operation on a single battery at the lowest setting. This means I can leave the sight on without worrying about it dying unexpectedly, providing peace of mind during extended shooting sessions or when carrying the pistol for self-defense purposes. It also features shake-awake, which turns it off after 10 minutes but wakes up immediately when in motion.

Now, let’s talk about value and price. With an MSRP just shy of $350, the Holosun 507K X2 offers exceptional value for what it brings to the table. Comparable red dot sights from other manufacturers often come with a higher price tag, making the Holosun a compelling choice for budget-conscious shooters without sacrificing quality or performance.

The Holosun 507K X2 is an exceptional reticle known for its great aim, solid construction, reliable performance, long battery life and great value. It is a standout choice in the crowded red dot sight market and mine now lives atop my everyday carry gun.


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