Hawke Sport Optics 1-pc elevation adapter

3/8" to Weaver rail* Rail has some elevation built in to it Compensates for droop Up to 100 MOA of elevation adjustment Includes a rail and a hex wrench 0.63" high 5.4" long Black

*3/8" is approximately 9.5mm, but this adapter has enough room in it to accommodate up to 11mm.