1. 100% brand new with high quality.2. The whole body is made of aviation metal material, and the military quality guarantees the product quality, the structure is firm and not easy to damage.
3. Specially designed to convert 11mm rail base to 20mm rail base.
4. Also raising up the mount base level on any 11mm mount base.
5. 11mm rail on both sides.
6. Increase the height of the flattop for easy aiming.
7. Adaptor is installed by wrench.