The RPM 30mm low rail cap diving board gives you a practical way to mount secondary aiming devices or rangefinding lasers alongside your primary magnified optic. Designed by Ruff's Precision Manufacturing, this rail cap accessory replaces the standard cap on RPM mount systems and opens up real estate on your rifle for additional tools—whether that's a red dot sight, offset laser rangefinder, or other rail-mounted accessory. If you're running an RPM CLR series ring or Bravo/Delta cantilever system, this diving board integrates seamlessly into your existing setup.

The design philosophy here is straightforward: stay compact, stay lightweight, maximize compatibility. There's no need for special hardware or adapter plates—the mounting screws that came with your original RPM rings or cantilever are the exact fasteners you'll use to install the diving board. That means less hunting through your parts bin and faster setup on the bench or in the field.

This accessory is built for shooters who want flexibility without complexity. Whether you're working a precision rifle that demands both long-range glass and a quick-acquisition secondary sight, or you're building a hunting rig that benefits from a rangefinder laser mounted parallel to your scope, the RPM 30mm low rail cap diving board does what it's supposed to do—hold your gear securely and stay out of the way.

The RPM 30mm low rail cap diving board gives you a practical way to mount secondary aiming devices or rangefinding lasers alongside your primary magnified optic. Designed by Ruff's Precision Manufacturing, this rail cap accessory replaces the standard cap on RPM mount systems and opens up real estate on your rifle for additional tools—whether that's a red dot sight, offset laser rangefinder, or other rail-mounted accessory. If you're running an RPM CLR series ring or Bravo/Delta cantilever system, this diving board integrates seamlessly into your existing setup.

The design philosophy here is straightforward: stay compact, stay lightweight, maximize compatibility. There's no need for special hardware or adapter plates—the mounting screws that came with your original RPM rings or cantilever are the exact fasteners you'll use to install the diving board. That means less hunting through your parts bin and faster setup on the bench or in the field.

This accessory is built for shooters who want flexibility without complexity. Whether you're working a precision rifle that demands both long-range glass and a quick-acquisition secondary sight, or you're building a hunting rig that benefits from a rangefinder laser mounted parallel to your scope, the RPM 30mm low rail cap diving board does what it's supposed to do—hold your gear securely and stay out of the way.