2 options





Click to see full view
Holosun
Overview
The Holosun HS510C Open Reflex Green Circle Dot Sight in Flat Dark Earth (FDE) offers a reliable and versatile aiming solution for your rifle setup. This reflex sight features a green reticle, enhancing visibility in various lighting conditions, which can be particularly beneficial for quick target acquisition. Builders often incorporate this optic into tactical or competitive builds where rapid engagement and accuracy are paramount.
Holosun HS510C Open Reflex Green Circle Dot Sight - FDE
2 options
Holosun HS510C Open Reflex Green Circle Dot Sight - FDE ranked #43 of the 220 optics builders added on GunPartPicker in October 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #109 of the 536 optics builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in October 2026, and today 2 of the 3 retailers we track have it in stock. Prices barely moved in October 2026, holding around $339.99, so there haven't been real sales lately. Buying today, the lowest price is $339.99 at Primary Arms, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every optic by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Red Dot & Optic Guide →Check it against the live catalog:
The part most often added in each category by the builds that include this one

Magpul AFG-2 Angled Fore Grip - Black

Cryptic Coatings 5.56 NATO AR-15 Bolt Carrier Group - Mystic Bronze

PSA JAKL 5.56 Complete Lower MOE EPT, FDE

Breek Arms Warhammer MOD2 AR-15 Ambidextrous Charging Handle - FDE

Spikes Tactical Upper 5.56 11.5in FN CHF w/FDE MOE Handguards & FSP

Rise Armament Ra-524 Blitz Performance Trigger Drop-In
Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Holosun HS510C Open Reflex Green Circle Dot Sight - FDE
| Build | Parts | Total |
|---|---|---|
| My future build | 12 | $2721.11 |
| Mr future build | 12 | $2721.11 |
![]() | 22 | $1968.11 |
No reviews yet. Be the first to review this product!