The Holosun HS515GM Red Dot Sight (HS515GM) is a 1x micro rifle red dot sight in a titanium housing weighing 3.74 oz (106 g), with the Multi-Reticle System — a 2 MOA red dot, a 65 MOA circle, or both together as a circle-dot — behind a 0.78 in (19.8 mm) window, on a quick-detach Picatinny mount at 1.63 in (41.4 mm) lower-1/3 co-witness. UPC 605930624717.
The GM is the flagship of the 515 series: the same duty-ready package as the HS515CM, with the 7075 aluminium housing replaced by titanium. That gets the complete optic down to 3.74 oz (106 g) while raising, not lowering, the strength of the body — which is the trade weight-conscious rifle builders are usually looking for. Rotating protective lens caps with a kill flash guard the glass, Solar Failsafe backs up the side-tray CR2032 for up to 50,000 hours with Shake Awake, and the unit is rated IP68 and IPX8.
How It Compares
The aluminium version is the HS515CM red dot sight, with matching optics, QD mount and lens caps at lower cost. For a fully enclosed titanium optic instead of an open emitter, the HE512T red dot sight seals the emitter completely. For a wide-window open reflex sight, see the HS510C red dot sight. At 1.63 in it pairs with lower-1/3 magnifiers such as the HM3X-Micro 3x magnifier. Browse all Holosun rifle red dot sights and our straight-pull rifle optics.
Ideal For
- Weight-conscious rifle builds that still need maximum housing strength
- Civilian Service Rifle and practical rifle on straight-pull AR-pattern carbines
- Builds that need a quick-detach mount and returnable zero between rifles
- Practical shotgun and 3-Gun, where the 65 MOA circle drives fast close hits
Key Features
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Housing: titanium, 3.74 oz (106 g) complete
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Reticle: red Multi-Reticle System — selectable 2 MOA dot, 65 MOA circle, or circle-dot
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Emitter: 650 nm red LED
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Window: 0.78 in (19.8 mm) diameter
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Mount: quick-detach Picatinny mount at 1.63 in (41.4 mm) lower-1/3 co-witness
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Lens protection: rotating protective lens caps with an anti-reflection kill flash
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Electronics: Solar Failsafe supplemental power plus Shake Awake motion activation
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Battery: side-tray CR2032, up to 50,000 hours of runtime
Technical Specifications
| Optic Type |
Micro rifle red dot sight, 1x (non-magnified) |
| Reticle |
Multi-Reticle System — 2 MOA dot / 65 MOA circle / circle-dot |
| Reticle Colour |
Red |
| Light Source |
650 nm red LED |
| Window Size |
0.78 in (19.8 mm) diameter |
| Mount |
Quick-detach Picatinny, 1.63 in (41.4 mm) lower-1/3 co-witness |
| Lens Caps |
Rotating protective caps with anti-reflection kill flash |
| Battery |
CR2032 in a side tray, up to 50,000 hours |
| Power |
Battery with Solar Failsafe supplemental power |
| Power Management |
Shake Awake motion activation |
| Housing |
Titanium |
| Water Resistance |
IP68 / IPX8 |
| Dimensions |
2.75 × 1.43 × 1.63 in (70 × 36 × 41 mm) |
| Weight |
3.74 oz (106 g) |
| MPN / UPC |
HS515GM / 605930624717 |
What's Included
- Holosun HS515GM titanium red dot sight with quick-detach Picatinny mount
- Rotating protective lens caps with kill flash
- Multi-tool, lens cloth and user manual
Warranty
Covered by Holosun's manufacturer warranty, handled in the UK by Xtreme Tactical.
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Holosun's warranty.
Frequently Asked Questions
What is the difference between the Holosun HS515GM and the HS515CM?
The Holosun HS515GM swaps the HS515CM's 7075 aluminium housing for titanium, bringing the complete optic to 3.74 oz (106 g) with a stronger body. Optics, Multi-Reticle System, quick-detach mount and lens caps are otherwise the same.
What mount does the Holosun HS515GM come with?
The Holosun HS515GM is supplied with a quick-detach Picatinny mount that sets the reticle at 1.63 in (41.4 mm), which is lower-1/3 co-witness height on an AR-pattern rifle.
How much does the Holosun HS515GM weigh?
The Holosun HS515GM weighs 3.74 oz (106 g) complete, which is what the titanium housing buys over the aluminium HS515CM.
What is the kill flash on the Holosun HS515GM?
The Holosun HS515GM ships with rotating protective lens caps incorporating an anti-reflection kill flash, which stops light reflecting off the objective lens while the caps protect the glass.
Can I change the battery on the Holosun HS515GM without unmounting it?
Yes. The Holosun HS515GM uses a side-tray CR2032, so the cell can be replaced with the optic still on the rifle and zeroed.
Is the Holosun HS515GM waterproof?
Yes. The Holosun HS515GM is rated IP68 and IPX8 in a titanium housing, covering dust ingress and immersion in water.
