Crazy Ivan Quick-On Mosin-Nagant scope mount with low profile Picatinny rail also for red dot/reflex/holographic sights, made in the USA Unique design allows optics to be easily removed yet quickly reattached to original zero position Black mil-spec 8625 hardcoat anodized aluminum alloy (6063-T6) for high strength and light weight Detailed instructions help ensure proper, low effort, installation Mounting plate can be filed for custom alignment NOTE: Requires low profile bolt handle such as the Crazy Ivan No-Weld Handle