The Taran Tactical Ultimate Connector is made from SEA 1075 heat treated stainless steel for extreme durability. The connector has been mirror polished for a crisp clean trigger break. This connector is the only one one the market that includes a mil spec electro-less nickel plating for advanced wear and corrosion protection. The angles and finish of the connector create a light clean trigger break and is a great option for competion or carry use. Fits all Glock pistols (does not fit the G42/43).