This is a Genuine Smith Enterprises Gas Lock Front Sight or Gas Cylinder Support Wrench. New condition, but may have a few scratches/dings from storage. Part number 2017. Originally made for the Crazy Horse Sniper rifle, this wrench will also fit others with similar design such as the M14 and M1A rifles.. Allows for safe, secure removal of Gas Lock Front Sights by cradling and supporting the gas tube and barrel, and helps provide precise alignment during re-installation. Constructed of 7075 T-6 aluminum alloy. Dimensions are about 6" length x 3/8" thickness. Made in USA.