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If you run a Holosun HS507C on a Glock MOS, the Radian Guardian is built to keep that optic protected without turning your pistol into a tank. Machined from 7075 aluminum and hard anodized, this mount system delivers top, front, and side impact protection while maintaining a sleek profile that won't get in the way of your sights or handling.
What makes the Guardian stand out from generic optic plates is the engineering underneath. The STUD-LOK threaded stud and nut interface gives you way more thread engagement than standard mounting methods, which means greater hold-down power and seriously increased shear resistance. If your optic is going through daily carry, duty use, or competitive abuse, those extra threads matter. The TRU-SEAL system eliminates the need for a separate sealing plate by using pre-installed O-rings on the mounting screws that seal moisture out of your mounting threads. This keeps corrosion from setting up shop where you can't see it, extending the life of your slide's threads and preserving zero retention over time.
The design philosophy here is about working with what makes Glock MOS platforms effective in the first place. The mounting plate and guard are shaped to give you maximum optic protection without adding bulk. The engineering is clean and purposeful, not overbuilt in ways that would complicate your setup or make the gun harder to carry. You get structural protection for the glass and electronics of your HS507C while keeping your irons-forward sight picture clear and accessible.
This mounting system installs directly to Glock MOS slides that accept RMR-footprint optics, which covers the full range of standard MOS pistols including G17, G19, G34, and G45 models. The package includes all necessary mounting hardware and the pre-installed O-ring seals, so setup is straightforward without needing extra parts or improvising solutions.
Yes, the Guardian mounts both the HS507C and HS507COMP. The RMR-style footprint is the same across these Holosun models, so fitment is identical. This gives you flexibility if you decide to upgrade or swap optics within the same platform.
The TRU-SEAL system uses O-rings on the mounting screws to create a watertight seal between the optic plate and your slide. This keeps moisture out of the mounting threads where corrosion can destroy thread integrity over time. You avoid the extra bulk and cost of adding a separate sealing plate.
Standard mounts often use single-threaded fastening directly into the slide. STUD-LOK uses threaded studs and nuts that give significantly more thread engagement, creating greater hold-down power and shear resistance. This matters when you're running hard and your optic is taking impacts that would typically cause slippage or movement on lesser mounts.
The standard Guardian doesn't include integrated backup sights, but Radian offers a Guardian Plus Six variant that combines the mount with low-profile backup iron sights. If you already have the standard Guardian and want to add backup sights, you'd need to look at compatible aftermarket options that work with your specific Glock model.
| UPC | 810098420532 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | H0021 |
| Product Type | Mount |
| Model | |
| Color | Black |
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