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 New GG&G Flip Up Front Sight For Dovetailed Gas Blocks is easy to install and simple to deploy. It now is 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 AR-15 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. With the new 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 steel and is manganese phosphated black to mil spec.