This is an extremely durable scope mount with industry leading value and craftsmanship，super rugged，built for durability. Our mounts are made using next-gen CNC machining, robotic quality control, and aerospace-grade materials. Engineered for perfect stability, Lightweight strength, and reliability 6061 aluminum construction，with hardcoat anodized finish，holds zero consistently – built to retain alignment. The milled aluminum scope mount for mounting your scope or red dot. The new and improved tolerances eliminate adjustment nut rotation once installed. Centered over the bore axis, it guarantees a solid fit and maintains zero during use. If any movement is noticed during setup, simply tighten further until no adjustment is needed，adjust the depth nut to achieve proper locking lever tension, but do not over-tighten. Each unit undergoes thorough quality control checks to ensure proper fitment across a wide range of models，This mount fits some Yugo models，some Yugo models may not be compatible due to non-traditional elongated scope mounts。 the mount fits Great fit on USA, Chinese, and Russian standard mounts models!