GFLD3003-3 1-piece cantilever scope mount

25mm/30mm Dual Ring Cantilever Heavy Duty Scope Mount Picatinny/Weaver Rail 21mm

Single-piece Rifle Scope 25.4mm/30mm long base mount
Features:
Brand New item Full metal construction, military style Non-reflective black matt, lightweight and high strength. For Scope and Flashlight with 30 mm diameter or 20 mm rail. Attachs to 20 mm dovetail rail
See Through design allows you to aim with the Rifle's Iron Sight even with a Scope installed.
 
Specification:
 
Ring diameter : 30mm(without insert)/1 inch(with plastic insert)
Weaver size : 20mm 
Adaptor size : All 20mm Weaver Rail, scope rail or RIS/RAS Rail 
Length : 137mm  
Weight : 255g 
The package includes: 1x mount          1x allen key   2x plastic spacers