RPM 35mm Low Rail Cap Diving Board - Flat Dark Earth
The RPM 35mm Low Rail Cap Diving Board in Flat Dark Earth is a rail-mounted accessory platform designed to expand your optics setup without replacing your existing scope rings or cantilever mounts. If you're running an RPM magnified optic mount and want to add a secondary red dot sight, laser rangefinder, or other rail-mounted device, this "diving board" cap gives you a dedicated top-rail surface above your primary optic—all while keeping your setup compact and balanced.
What sets this accessory apart is its compatibility philosophy: it works as a direct replacement cap on all existing RPM products, including CLR series rings and Bravo/Delta cantilever mounts. There's no need to buy new rings or swap out your core mounting system. Simply remove your existing cap, install the Diving Board using the same screws that came with your original RPM purchase, and you're ready to mount a secondary optic or aiming device. It's the kind of modular thinking that lets you build your rig to match your hunting or range goals without starting from scratch.
Flat Dark Earth finish keeps your rifle aesthetically cohesive while offering the durability and low-glint properties serious shooters expect. RPM's design philosophy centers on keeping weight down and function up—this cap does exactly that, adding capability without the bulk. Whether you're setting up a precision hunting rifle with a rangefinder or a tactical platform with a backup aiming system, the Diving Board gives you the rail real estate to do it.
Key Features
- Drop-in replacement cap for all RPM CLR series rings and Bravo/Delta cantilever mounts
- Provides dedicated Picatinny rail surface for secondary optics or laser rangefinders
- Installs with original RPM screws—no additional hardware required
- Flat Dark Earth finish for low visibility and aesthetic consistency
- Lightweight design maintains overall rifle balance and ergonomics
Specifications
| Product Name | RPM 35mm Low Rail Cap Diving Board |
| Brand | RPM Mounts |
| Finish | Flat Dark Earth |
| Compatibility | All RPM CLR series rings and Bravo/Delta cantilever mounts |
| Installation | Uses original RPM mounting screws |
Frequently Asked Questions
Will this cap work with my existing RPM rings or cantilever mount?
Yes. The RPM 35mm Low Rail Cap Diving Board is designed as a direct replacement cap for all RPM CLR series rings and Bravo/Delta cantilever mounts. It installs using the screws that came with your original RPM product.
What optics can I mount on the diving board rail?
Any optic or aiming device with a standard Picatinny rail mount can be attached. This includes red dot sights, small magnified optics, laser rangefinders, and other rail-mounted accessories.
Do I need to buy new screws to install this?
No. The cap uses the exact same screws that were included with your original RPM purchase, so you should have everything needed for installation.

