- Lightweight aluminum alloy design: Our riser mounting base is made from high-strength 6061-T6 aluminum and CNC machined to deliver lightweight yet durable performance, suitable for a wide range of optical devices. - Optimized optical midline height: The riser base provides an optical midline height of 2.91 inches, enabling quick target recognition and improving shot accuracy and efficiency. - Strong compatibility: This riser base is perfectly compatible with 558 Ziellasern and other similar devices. It can be securely mounted on 20-mm mounting rails to ensure a stable connection. - Smart design and usability: The riser base features an integrated through-hole for an Allen key; a short rear base design allows placing the optic closer; and wider cable management holes for easy cable organization. Use scenarios - Dynamic rifle or airsoft setups: Mount a red dot sight or magnifier on a 20-mm rail to raise the optic to the 2.91-inch midline height, enabling faster target acquisition in rapid engagements. - Training, competitions, or field use: Utilize the 558 Ziellasern or similar optics on a stable 20-mm rail mount for consistent zero retention and reliable performance during drills or matches. - Cable-dependent optics and accessories: Take advantage of the wider cable management holes to route power or data cables neatly, reducing snag risk and maintaining a clean, organized rail system.