User Ratings
No ratings yet
Be the first to review this product
Holosun HS403C + HM3X Combo (Black)
Holosun HS403C red dot with HM3X 3X magnifier combo for rifle and carbine optics.
- HS403C red dot: 20mm micro sight with 2 MOA dot reticle
- Solar Failsafe: 12 brightness settings, including night vision
- Battery life: up to 50,000 hours (mid-range setting)
- Water resistance: IP67
HM3X magnifier (3X)
- Magnification: 3X
- Housing: aluminum
- Mount: quick-release, ambidextrous flip-to-side
- Eye relief: 2.75 in
- Optics: parallax-free
System is parallax-free, flip-to-side, and provides a clear sight picture in harsh environments.
Specifications
- Manufacturer:
- Holosun
- Category:
- red-dot-holo-sight
- UPC:
- 810047071624
- MPN:
- HS403C+HM3X Combo
- Required Component:
- No
Parts Cabinet
Track parts you own or plan to buy.
Where to Buy
Have one to sell?
Sponsored
MantisX
The smart way to train your AR build
Built your rifle — now train it. BlackBeardX installs in minutes and turns your AR into a full dry fire system with smart feedback on every pull.
Shop BlackBeardXPrice History
Current
$375.99
Lowest
$375.99
Highest
$375.99
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertSimilar Products

Vortex Optics StrikeFire II Red Dot Sight 30mm Tube 1x 4 MOA Red and Green Dot with Lower 1/3 Co-Witness Cantilever Picatinny Ring Mount Matte Black
Vortex Optics
$149.99

SIG Sauer Romeo4T Pro Red Dot 1x .5 MOA, Black - SOR44101
Sig Sauer
$549.99

Sig Sauer Romeo MSR Red Dot Gen II Optic - SORMSR101
Sig Sauer
$109.99

Vortex Triumph 2 MOA Red Dot Sight w/ Lower 1/3 Co-Witness Mount, Low Mount, Unlimited Eye Relief, Waterproof, Night Vision Compatible
Vortex
$99.00

Trijicon RMR Type 2 3.25 MOA Red Dot Sight Cerakote Olive Drab Green RM01-C-700623
Trijicon
$455.99

Vortex Crossfire 2 MOA Green Dot Black Sight CF-GD2
Vortex
$149.00

Sig Sauer Romeo5 Gen II Compact Red Dot Sight 1x20mm 2 MOA SOR5102
Sig Sauer
$106.99

Aimpoint Patrol Rifle Optic PRO Red Dot Sight LRP Spacer 39mm
Aimpoint
$497.00
Builds Using This Part
No builds yet — be the first to use this part.
Related Guides
Guide
AK Optics Mounting Guide: Side Rail vs Dust Cover vs Handguard
Compare the main AK optics mounting approaches and choose the right setup for durability, repeatable zero, and practical shooting performance.
8 min read
Guide
Glock-Compatible Platform Overview: What Matters for Reliable Builds
A practical overview of Glock-compatible pistol builds, including compatibility checkpoints, reliability priorities, and upgrade sequencing.
7 min read
Guide
Glock-Compatible Red Dot Setup and Zeroing Basics
How to set up a red dot on Glock-compatible pistols, avoid mounting mistakes, and choose a practical zero for defensive and range use.
7 min read