Finish is black anodized aircraft grade aluminum.Hex Nut to tighten the base onto receiver top.
Suitable G3 / MP5 Series,Clamps directly to the top of the receiver.When installing, it will not fail if you try to "insert the long side of the hex wrench into the screw head and turn it."
Accepts all weaver standard rings.20mm Standard Weaver Base take any scope mounts.
Adjustment may be necessary due to individual differences when installing.
Length: 90mm (3.54"). Package: 1 x mount,1x Hex wrench (Please check the size before make an order )