Ruffs Precision Rail Cap Features Ruffs Precision designs its products to be compact and lightweight while remaining compatible with as many optic and accessory combinations as possible and the Rail Cap continues that philosophy. This high profile diving board style cap replaces the factory top cap on compatible RPM mounts opening up a mounting rail for a laser rangefinder or a secondary red dot sight above a primary magnified optic. The cap is machined from aluminum and measures 4.9 inches long and 2.6 inches wide keeping the added rail section proportionate to the mount it attaches to. At 0.12 pounds it adds negligible weight to an already mounted optic setup. Because the Rail Cap fits all existing RPM products including every CLR series ring and both the Bravo and Delta cantilever lines shooters do not need to replace their entire mount to gain rail space for a secondary device. The original screws from the mount s initial purchase are the exact fasteners needed for installation so no additional hardware shopping is required. Finished in black to match most tactical optic setups the cap blends seamlessly into an existing rifle build. This Ruffs Precision Rail Cap is available for sale at GrabAGun for shooters who want to add a secondary aiming device to their primary optic mount. Ruffs Precision Rail Cap Specifications Manufacturer: Ruffs Precision Model: Rail Cap Tube Diameter: 34mm Color: Black Material: Aluminum Length: 4.9 Width: 2.6 Height: High Weight: 0.12 lbs Available At: GrabAGun