HOLOSUN 407C/507C-X3 Series
- Handgun Scope
- Aluminum
- Dot, Circle
- Hunting
- Better rated than 95%
A reasonable pick for RMR-footprint pistols, worth choosing the 507C variant specifically if the circle-dot reticle option matters to you.
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How it ranks among the 24 handgun scopes we track
4.9★ across 13 Amazon ratings, Bayesian-smoothed toward the category average.
13 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
407+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 24 handgun scopes we track - how the scorecard works · full handgun scopes data report. Confidence: limited - limited rating history.Last refreshed Jun 22, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A pistol reflex sight in the 407C/507C-X3 platform, sold across six dot, circle-dot, and color combinations, built around an RMR-footprint mount and a solar-assisted battery system. It targets shooters mounting an optic directly on a pistol slide.
This listing covers a red dot family, not a magnified scope, despite sitting in a handgun scopes category, and the RMR footprint is the detail that actually determines whether it will bolt onto a given slide cut. Holosun's X3 housing keeps the 407C and 507C variants dimensionally similar, with the main difference being that 507C models add a circle-dot multi-reticle option while 407C sticks to a single 2 MOA dot. Solar assist and Shake Awake are meant to extend battery life between charges rather than eliminate the need for a battery.
- RMR-footprint mount for pistol slides
- 12 manual brightness settings with lockout
- IP67 waterproof, 5000G shock rated
- Solar failsafe plus Shake Awake activation
Who it's for
Suited to pistol shooters who already have an RMR-cut slide or plan to mill one and want a low-profile carry or range optic. Less useful to anyone shopping for a rifle scope or needing magnification, since this is an unmagnified reflex sight.
What buyers say
From Amazon customer reviews.
Both reviewers who left feedback call it a solid, well-made optic, with one noting the 407C shares the same specs as the 507C aside from the multi-reticle option.
Strengths and trade-offs
Drawn from this product's published specifications.
- RMR footprint fits many milled pistol slides
- Solar assist and Shake Awake extend runtime
- Six dot, circle-dot, and color variants to choose from
- Only fits slides already cut to the RMR footprint
- No magnification, not a rifle scope substitute
Performance notes
Brightness is set automatically by a forward-facing solar photodiode with 12 manual settings and a lockout mode available, and Shake Awake wakes the sight from standby on movement so it is live before the gun is presented. The housing is 7075-T6 aluminum rated to IP67 and 5000G, aimed at surviving recoil and field conditions on a carry pistol rather than a bench-mounted rifle.
Specifications
| Brand | Brand |
|---|---|
| Model | HS407C-RD2-X3-Holosun |
| Dimensions & fit | |
| Item Weight | 0.5 ounces |
| Item Dimensions L x W x H | 1.8 × 1.3 × 1.1 inches |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Red |
| Lens Color | Red |
| Compatibility & installation | |
| Mounting Type | 407C / 507C / RMR |
| Compatible Devices | Handgun |
| Included components | |
| Unit Count | 1 |
| Included Components | Lens Cloth, Manual, Tool |
| Warranty & support | |
| Warranty Description | Lifetime |
| Other details | |
| Reticle Type | Dot, Circle |
| Sport Type | Hunting |
| Thread Type | M1913 |
| Night vision | No |
| Product Style | 2 MOA |
Other Brand handgun scopes
How it compares
This product against the closest alternatives we track in handgun scopes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| HOLOSUN 407C/507C-X3 SeriesThis product | 4.9 / 5 | 13 | 2.7 / 5 |
| Trijicon RMR Type 2 6.5 MOA Adjustable LED Red Dot SightTrijicon | 4.4 / 5 | 458 | 4.2 / 5 |
| NcStar 2.5X30 Pistol Scope/Blue Lens/RingNcSTAR | 4.4 / 5 | 397 | 4.2 / 5 |
| UTG 2-7X32 1" Handgun ScopeUTG | 4.3 / 5 | 322 | 4.1 / 5 |
| MECANIK Canik M03 1x29mm Competition Reflex Red Dot SightMecanik | 4.4 / 5 | 227 | 4.1 / 5 |
Similar handgun scopes from other brands
Questions about the Brand HS407C-RD2-X3-Holosun
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the difference between the Holosun 407C and 507C in this X3 line?
Per the listing, the two share the same specs, with the 507C adding a multi-reticle option that combines the 2 MOA dot with a 32 MOA circle, while the 407C offers the single dot only.
Will the Holosun 407C/507C-X3 fit any pistol?
It uses the RMR footprint, so it fits slides already milled to that cut; it will not mount on a slide without a compatible cut or plate.
Does the Holosun 407C/507C-X3 need a battery even with solar assist?
Yes, the solar photodiode is a failsafe that extends runtime, not a replacement for the battery that powers the reticle.