Material: aluminum alloy Mounting diameter: 30 mm Rail size: 20 mm 30 mm nonreflective doublering scope mount with a profile for 20 mm rails, compatible with quickchange hunting setups Quickrelease nut enables immediate attachment and removal Key benefits Durable aluminum alloy construction for rugged field use Fits standard 30 mm scope tubes and 20 mm rails Nonreflective finish reduces glare for stealth in bright conditions profile design provides clear alignment with large objective lenses Doublering design secures the scope for stable, repeatable positioning Quickrelease nut allows fast, tool mounting and dismounting Lightweight yet sturdy for reliable performance in hunting and range use Specifications at a glance Material: Aluminum alloy Mounting diameter: 30 mm Rail size: 20 mm Finish: Nonreflective Type: Doublering scope mount with profile Compatibility: 30 mm scope tubes on 20 mm rails Fastening: Quickrelease nut Use scenarios Biggame hunting: Attach a 30 mm scope to a rifle with a 20 mm rail; use the quickrelease nut to mount or remove the optic rapidly between stalks or when switching rifles. Field maintenance or multirifle setups: Move the optic between rifles or remove it for transport without tools, reducing downtime and protecting the optics during travel. Range and variable conditions: Quickly swap optics to adapt to different distances or lighting, while maintaining a stable, secure fit on the 20 mm rail.