GG&G AR-15 Front Flip Up Sight For Dovetail Gas Block

The AR-10/AR-15 Flip-up front sight is easy to install and easy to use. It installs quickly onto the existing dovetailed gas block with only an allen wrench. Once installed it never needs to be removed, because the sight is rapidly deployable, can be quickly raised or lowered as needed. When in the upright position it is at the same height as the original.