This heavy duty, solid steel fixture securely holds the slide and the night sight in the proper, damage-free position for fast and easy staking. Simply clamp the fixture in your bench vise and clamp the slide and sight in the fixture. The night sight is now ready to stake using your 1911 front sight staking tool. Can be used with both Government, Commander, and Officers ACP length slides, and all 1911 stake-on sights. This fixture is for .125″ wide front sights, and will not work with front sights that are over .125″ wide.