Ruffs Precision Diving Board Rail Cap Features The Ruffs Precision Diving Board Rail Cap is machined from 6061-T6 aluminum and finished in black matching the rest of the RPM ring and cantilever lineup for a clean uniform look on a rifle. It measures 7.60 inches long and 2.6 inches wide with a low profile height keeping the overall footprint compact even as it adds mounting real estate above an existing optic. Because it is designed to replace the stock cap on any current RPM ring or cantilever installation does not require new screws beyond what already shipped with the original product simplifying the upgrade process considerably. This accessory is built specifically for shooters who want to run a rail mounted laser rangefinder or a secondary red dot alongside a primary magnified riflescope a setup increasingly common among long-range and tactical shooters. The cap screws included in the original RPM purchase are the exact fasteners needed for installation so there is no guessing on hardware compatibility. At 35mm tube diameter it is sized for the larger main tube scopes that have become standard on modern precision rifles. The Ruffs Precision Diving Board Rail Cap is a straightforward way to expand optic real estate for sale at GrabAGun. Ruffs Precision Diving Board Rail Cap Specifications Manufacturer: Ruffs Precision Model: Diving Board Rail Cap Color: Black Material: Aluminum Tube Diameter: 35mm Ring Height: Low Length: 7.60 Width: 2.6 Weight: 0.10 lbs Available At: GrabAGun