The RS Regulate VZ-304 VZ 58 Rear-Biased Lower Rail is an AK47/AKM optic mount system designed to enhance precision and versatility for shooters who demand a solid, low-profile platform, featuring a 2-Piece receiver mount crafted from 6061 T6 aluminum with a Matte Black finish and a Black color that resists wear while maintaining a sleek silhouette. Built to accept Picatinny mounts, this 2-Piece design provides robust durability and reliable return-to-zero alignment, making it an ideal choice for scope bases and mounts on VZ-58 platforms where a rear-biased lower rail can improve cheek weld, balance, and optic integrity during rapid target acquisition. By integrating seamlessly with standard AK optics, the system enables clean accessory installation without sacrificing field performance or firearm handling, allowing shooters to pair dependable iron sights with modern red dot or optic setups for varied hunting and tactical scenarios. The receiver-mount style and precision machining deliver consistent torque transmission and repeatable sighting, supporting accurate engagement across a range of calibers and environments while maintaining a lightweight, rugged build appropriate for serious hunting, competition, or range work.