Holosun HM3X
3x magnifier with a quick-detach flip-to-side Picatinny mount and a spacer for absolute or lower-third co-witness height, 70 mm eye relief and a 7 degree field of view. Pairs with Holosun and other red dots at a matching height. Weight is the body figure Holosun lists for the magnifier with its mount.
- Category
- Magnifier
- Manufacturer
- Holosun Technologies
- Weight
- 278 g
- Mounts at
- Top
Specification
Everything measured
IdentityWhat it is and who made it.
- Category
- Magnifier
- Manufacturer
- Holosun Technologies
- Model number
- HM3X
- Factory part
- No
Dimensions
- Weight
- 278 g
- Length
- 102 mm
FitmentThe interface it offers and the one it needs, rather than a list of guns it claims to fit.
- Mounts at
- TopThe upper rail, over the receiver: optics, magnifiers and back-up sights.
Picatinny rail (MIL-STD-1913)A machined rail the part clamps onto. Picatinny and Weaver look alike and are not interchangeable in every direction.rail:picatinny
Needs
ProvenanceEvery figure above was taken from one of these pages. The confidence reflects how much of the record came from a page a claim can be checked against.
Confidence in this record
95%
Stockists
Where to buy
Offers link straight to the shop. GunSpec never takes the order.
No shop has listed this part yet
Stock and prices come from the shops themselves. If you sell this part, you can list it and it appears here.
List a partCompatibility
Which firearms take this part
Studio
Every firearm this threads onto, resolved
Not a list the maker typed out: the answer comes from the interface this part needs and the mounts each firearm exposes, so it stays right when either one changes.
- The reverse lookup on every part in the catalogue
- Interface standards, platforms and fit overrides
- The same answers through the API and the MCP server
Requires a signed-in GunSpec account on the Studio plan. The answer is computed per firearm, so it is not part of the public record.
API
The call that returns this record
The same fields, in the same units, from the same endpoint the page reads.
curl --request GET \ --url 'https://api.gunspec.io/v1/attachments/holosun-hm3x' \ --header 'X-API-Key: your_key'{ "id": "holosun-hm3x", "name": "Holosun HM3X", "category": "magnifier", "manufacturer": { "id": "holosun", "name": "Holosun Technologies" }, "weight_g": 278, "length_mm": 102, "requires_position": "top", "provides": [], "requires": [ [ { "id": "rail:picatinny", "name": "Picatinny rail (MIL-STD-1913)", "kind": "rail" } ] ]}