Quick Release Scope Mount
Quick release scope mount. These are sold at huntshopnz for $56 with their Maxtoch brand.
Ring Diameter: 30mm with a 25.4mm insert
Weaver Size: 20mm
By flicking the lever out the top piece detaches. Great for searching with the torch and then snap it back on for the shot.
If you place the spring loaded side (lever side) onto the rail first (bottom attachment) it will fit on much easier.