Finding the Holosun 507k x2 Best Price: A Comprehensive Guide

As of August 1, 2026, the Holosun 507K X2 is not yet in our daily price tracker; optics tracking is being wired up, and this page will carry live store prices, a 90-day chart and a price verdict when it lands. Until then, current pricing is available through the Amazon button above. Reputable dealers rarely discount this model deeply, so treat a listing far below the going rate as a prompt to check the seller.

Which model is this, exactly?

Holosun’s naming trips a lot of buyers, and paying the right price starts with pricing the right product. The 507K X2 is the K-series (micro-compact) sight with the circle-dot Multi-Reticle System and the X2 revisions: a side-loading battery tray and button lock mode. The plain 507K without X2 is the earlier run without those revisions and mostly survives as old stock. The 407K X2 looks identical but has a 2 MOA dot only, no circle, and usually sells lower; if a “507K deal” is suspiciously cheap, check that the listing is a 507K X2 and not a 407K. There is also an ACSS Vulcan reticle version sold through one retail partner at its own price. Comparing listings across these four names as if they were one product is the most common way people misjudge this sight’s real market price.

Fit: slides and holsters

The 507K X2 uses the Holosun K footprint, which is close enough to the RMSc pattern that most slides cut for RMSc accept it; some slides need slightly different screws, which reputable dealers list alongside the optic. It is sized for micro-compact pistols. Holster fit is the practical question people miss: an optic-cut holster is required, and most modern kydex for micro-compacts already clears a K-footprint sight. If your pistol wears suppressor-height sights, check the lower third of the window for co-witness before assuming it works.

Battery and Shake Awake, in practice

Two design choices define daily life with this sight. The side battery tray means a battery change does not require removing the optic, so your zero is not disturbed on schedule. And Shake Awake means the sight sleeps when motionless and wakes on movement, which is why the multi-year battery ratings are realistic rather than theoretical; the wake behavior and sleep timer are configurable, and lock mode prevents pocket-press button accidents. Keep a spare CR1632 in the range bag: it is a less common cell than the CR2032 many other sights use.

Price context

We do not publish a tracked price for this model yet, and we will not guess one. When tracking begins, this page will show the store-by-store table, the 90-day average and a verdict computed by the rules on our methodology page. Our verdicts here will be about price legitimacy, not shooting performance; we do not test optics.

Who it’s for

• You are mounting an optic on a micro-compact pistol with an RMSc-pattern cut and want the K footprint.
• You want a circle-dot reticle you can switch to a plain 2 MOA dot.
• You value changing batteries without unmounting the sight and re-zeroing.

Who it’s not for

• Your slide is cut for the RMR pattern: look at the 507C line instead of adapting plates you do not need.
• You only want a simple dot and a lower price: the 407K X2 is the same housing with a dot-only reticle.
• You carry in lint-heavy or wet conditions and want a sealed window: an enclosed-emitter sight such as the Holosun EPS Carry addresses that differently than any open-emitter design can.

Alternatives worth pricing

Price the 407K X2 (dot only, lower cost), the 507C X2 (full-size RMR footprint) and the EPS Carry (enclosed emitter) alongside this sight. All three solve neighboring problems, and on sale days they trade places in value; when our tracker covers optics, those comparisons will be one click from this page.

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