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Holosun 510C vs EOTech XPS2

By Cole Harlan, EditorUpdated Nov 5, 2026How we verifyEditorial standards

The biggest cited difference is size and weight: Holosun lists the HS510C at a 4.94 oz body measuring 3.3″ × 1.68″ × 1.78″, while EOTech lists the HWS XPS2 at 9.0 oz and 3.8″ × 2.1″ × 2.5″. The batteries and runtimes also differ: a CR2032 rated 50,000 hours at setting 6 for Holosun, and a CR123 rated 1,000 continuous hours at setting 12 for EOTech. Figures are copied from each maker’s product page, checked November 5, 2026.

At a glance

Spec (maker label)	Holosun HS510C	EOTech HWS XPS2
Sight type (maker wording)	“Open Reflex Sight” with LED light source, 1x	Holographic (“HWS”); EOTech says its optics use holography, “not LED projection”
Reticle	2 MOA Dot & 65 MOA Circle; selectable 2 MOA dot, 65 MOA circle or combined circle-dot (Multi-Reticle System)	Standard 1-Dot Speed Ring version (XPS2-0): 68 MOA speed ring with a 1 MOA dot. EOTech lists other reticle versions; we compare this one.
Window size	0.91″ × 1.26″	Not yet verified (not in the Tech Specs we read)
Dimensions	Body 3.3″ × 1.68″ × 1.78″	L × W × H: 3.8″ × 2.1″ × 2.5″ (96.5 × 53.3 × 63.5 mm)
Weight	4.94 oz (labeled “Body (oz)”)	9.0 oz (255 g)
Battery	CR2032, side-mounted tray	1 × CR123
Battery life (maker wording)	50,000 Hours (Setting 6)	1,000 continuous hours at nominal setting 12 at room temperature; *600 for green reticle
Brightness	10 Daylight & 2 NV	20 daylight settings
Night vision	Two night-vision brightness settings listed	Night Vision Compatibility: No (the non-night-vision XPS2)
Adjustment per click	0.5 MOA (travel ±50 MOA)	0.5 MOA per click
Water rating	IP67 (submersion)	Water resistant: 10 ft. (3 m) depth
Power features	Solar power, shake awake, auto off, automatic brightness, lockout mode	Not yet verified
Mount	Fitment: Direct Mount Picatinny Rail; integrated quick-detach Picatinny mount	1″ Weaver or MIL-STD-1913 rail
Source (checked Nov. 5, 2026)	holosun.com/products/hs510c	eotechinc.com HWS XPS2

Like for like: Holosun labels its weight as “Body (oz)”; EOTech prints “Weight” for the whole HWS, so we do not subtract. The two battery-life figures use different cells (CR2032 and CR123) and different brightness settings (6 and 12), so we do not convert or compare them. Water ratings use different systems (an IP67 submersion rating for Holosun, a 10 ft. depth for EOTech), and we do not equate them. These are different kinds of sight: Holosun’s is an open reflex with a solar cell, EOTech’s is holographic. Holosun lists two night-vision settings; the XPS2 is the version EOTech says is not night-vision compatible. EOTech prints a price on its page; we list none.

Which to pick (on paper)

If you want the lighter printed weight and smaller body: Holosun lists 4.94 oz and 3.3″ × 1.68″ × 1.78″; EOTech lists 9.0 oz and 3.8″ × 2.1″ × 2.5″. The weights are labeled differently (body only versus whole optic).
If you want the longer printed battery life: Holosun lists 50,000 hours at setting 6 on a CR2032; EOTech lists 1,000 continuous hours at setting 12 on a CR123 (600 for the green reticle). Different settings, so not a like-for-like test.
If you use night vision: Holosun lists two NV brightness settings. EOTech says the XPS2 is not night-vision compatible.
If you want more daylight brightness steps: EOTech lists 20 daylight settings; Holosun lists 10.
If you want the holographic reticle: EOTech’s XPS2 is its holographic HWS with a 68 MOA ring and a 1 MOA dot. Holosun’s is a reflex with a selectable 2 MOA dot and 65 MOA circle.
If you care about the water rating: Holosun lists IP67; EOTech lists 10 ft. (3 m). We do not rank them.

We have not range-tested these; facts above are from the makers.

Not yet verified

The XPS2 window size and power features (not in the Tech Specs we read), and the HS510C runtime at other settings.
Specs for EOTech’s other XPS2 reticle versions; we compared the standard 1-Dot Speed Ring only.
Prices are not shown.

Frequently asked questions

How much does the Holosun HS510C weigh compared with the EOTech XPS2?

Holosun lists a 4.94 oz body weight for the HS510C. EOTech lists 9.0 oz (255 g) for the HWS XPS2. The labels differ, so we do not subtract.

What batteries do the HS510C and XPS2 use?

Holosun lists a CR2032 with 50,000 hours at setting 6. EOTech lists one CR123 with 1,000 continuous hours at nominal setting 12 (600 for the green reticle).

Is the EOTech XPS2 night-vision compatible?

EOTech lists Night Vision Compatibility: No for the HWS XPS2. Holosun lists 10 daylight and 2 NV brightness settings for the HS510C.

Holosun 510C vs EOTech XPS2

At a glance

Which to pick (on paper)

Not yet verified

Frequently asked questions

Sources

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At a glance

Which to pick (on paper)

Not yet verified

Frequently asked questions

Sources

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