The RPM 35mm Low Rail Cap Diving Board Flat Dark Earth is a purpose-built optic accessory from Rubicon Precision Manufacturing (RPM Mounts) designed to expand the capability of your magnified scope without adding bulk. Replacing the standard cap on RPM CLR series rings and Bravo/Delta cantilever mounts, it provides a rigid Picatinny-style platform over the scope tube for mounting compact red dots, laser rangefinders, or other rail-based accessories while maintaining a clean, streamlined profile.

This low rail cap is tailored specifically for 35mm scope tubes, giving shooters who run larger optics a secure way to add secondary aiming devices or ranging tools. Its Flat Dark Earth finish blends naturally with modern rifles and optics, and installation uses the original cap screws, making the upgrade straightforward and repeatable. Ideal for range work, competition, and training where fast transitions or precise ranging are important, it reflects RPM’s reputation for compact, lightweight designs that prioritize compatibility and thoughtful engineering.

Key Features:

• Manufacturer: Rubicon Precision Manufacturing (RPM Mounts)
• Model: RPM 35mm Low Rail Cap Diving Board Flat Dark Earth
• Category: Red Dot Mounts / Picatinny-Style Universal Mounts
• Tube Compatibility: 35mm scope tubes
• Mount Type: Replacement cap for CLR series rings and Bravo/Delta cantilevers
• Accessory Interface: Picatinny rail for red dots or laser rangefinders
• Finish Color: Flat Dark Earth (FDE)
• Shipping Weight: 0.119 lbs
• UPC: 850063702294
• Manufacturer Part Number: 35-LRC-FDE