Many shooters feel the standard AR-10 and AR15 removable front sights are cumbersome to use, too easily misplaced, and distracting when optical sights are deployed. The GG&G Flip Up Front Sight For Dovetailed Gas Blocks is easy to install and simple to deploy. It is now improved with a mechanical locking detent. It can easily be installed by the operator onto the AR-10's gas block and that of most AR15 types - with only a cap screw wrench, which is included. Once installed, it can remain in place, as it can be raised or lowered instantly. Protective ears are provided for the sight with gripping serrations to more easily raise and lower the sight assembly. With the mechanical locking detent, the front sight cannot be accidentally lowered. To lower the sight the operator only has to push a button. When in the upright position it provides the same command height as the original AR-10 or AR15/M16 front sight. We use standard sight components in this fine sight. This rugged sight is manufactured from 4140 billet chrome moly steel and is manganese phosphated matte black to mil-spec. All edges have been dehorned to protect the shooter. As an option, a Trijicon Tritium Front Sight Post can be ordered with this sight.