The EOTech HHS I STC is a factory-matched hybrid system pairing the EXPS3 holographic weapon sight with the G33 3x magnifier on EOTech's compact Switch-to-Center (STC) mount — a true 1x holographic sight for close-quarters speed that flips to 3x for mid-range target ID, with a centralised magnifier position for better balance.
The EXPS3 runs a 68 MOA ring with a 1 MOA dot and is fully night-vision compatible, while the STC mount keeps the package compact and well-balanced.
How the EOTech HHS systems compare
The HHS I STC uses the STC (switch-to-center) mount for a centralised magnifier. For STS (switch-to-side) systems, see the dual-dot HHS VI, the 5x HHS V, or the value HHS II. Browse the EOTech range, build via AR-15 optics, and read our magnifier guide.
Ideal For
- Close to mid-range engagement
- Night-vision and low-light setups
- Compact, well-balanced rifle configurations
- Complete sight + magnifier builds
Key Features
- EXPS3 holographic sight (68 MOA ring / 1 MOA dot)
- Night-vision compatible (20 day / 10 NV)
- G33 3x magnifier on Switch-to-Center (STC) mount
- Side-button sight controls; integrated QD mounts
- Single CR123 battery
Technical Specifications
| Sight |
EXPS3 — 68 MOA ring / 1 MOA dot (red) |
| Magnifier |
G33, 3x, Switch-to-Center (STC) QD |
| Brightness |
20 daylight / 10 NV |
| Battery |
CR123 lithium |
| Waterproof |
10 m (33 ft) |
| Origin |
USA |
What's Included
- EOTech EXPS3 holographic weapon sight
- EOTech G33 3x magnifier + STC mount
- Integrated QD mounts, CR123 battery, documentation
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and EOTech's warranty.
Frequently Asked Questions
What's the STC mount?
Switch-to-Center — it positions the magnifier centrally for a compact, well-balanced package, versus the switch-to-side (STS) systems.
Is it night-vision compatible?
Yes — the EXPS3 has dedicated NV settings and the G33 is NV-rated.
What reticle does it use?
EOTech's classic 68 MOA ring with a 1 MOA centre dot.
