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The RPM 34mm High Rail Cap Diving Board is a versatile rail-mounted accessory platform designed to expand the capability of your precision rifle setup. If you're running an RPM 34mm scope ring or cantilever system and want to add secondary optics—like a red dot sight or offset aiming device—without removing your primary magnified scope, this diving board gives you a clean, integrated mounting solution. It's the kind of accessory that transforms a single-optic rifle into a truly adaptable platform for hunting, tactical use, or range work.
The beauty of the RPM design philosophy shows here: this is a simple cap replacement that fits all existing RPM products, including the CLR series rings and both Bravo and Delta cantilevers. No proprietary mounts, no guesswork about compatibility. If you're already invested in RPM's ecosystem, adding this rail cap is straightforward. The original screws that came with your rings or cantilever are exactly what you need to install it—no hunting for the right fastener size.
Built to be compact and lightweight, the diving board doesn't add unnecessary bulk to your setup while still providing a robust platform for rail-mounted laser rangefinders or secondary red dot sights. Whether you're setting up a precision hunting rifle with a backup aiming system or a competition gun that benefits from multiple sight options, this accessory keeps everything organized and accessible on your upper receiver rail.
| Brand | RPM Mounts |
| Product | 34mm High Rail Cap Diving Board |
| Color | Black |
| Compatible Systems | RPM CLR series rings, Bravo and Delta cantilevers |
Yes, the 34mm High Rail Cap Diving Board is designed to fit all existing RPM products, including CLR series rings and both Bravo and Delta cantilever systems. It's a direct cap replacement.
The diving board provides a rail-mounted platform compatible with laser rangefinders and red dot sights, or other rail-mounted aiming devices. Specific accessory compatibility depends on the rail specs of those individual devices.
No. The cap screws that came with your original RPM ring or cantilever purchase are the exact fasteners required to install the diving board. No additional hardware is needed.
The diving board is engineered to be compact and lightweight, consistent with RPM's design philosophy of minimizing bulk while maximizing functionality.

SKU: 200191422 • Width: 2.55in • Height: 1.85in • Depth: 4.85in • Weight: 0.139oz