An injection molding apparatus, the apparatus comprising: a cavity plate assembly; a first injection gate body having front and rear opposite sides and a first aperture extending through the first injection gate body between an injection gate outlet on the front side of the first injection gate body and an opening on the rear side of the first injection gate body; and a first molding body connectable to and disconnectable from the first injection gate body from the front side of the first injection gate body and the cavity plate assembly from a front side of a cavity plate assembly, wherein the first molding body defines at least a portion of a first molding cavity configured to mold at least a portion of a closure for a container, wherein, when the first molding body is disconnected from the front side of the first injection gate body and from the cavity plate assembly, the apparatus is free from any structure that would prevent the first injection gate body from being connectable to or disconnectable from the cavity plate assembly from the front side of the cavity plate assembly, characterized in that the apparatus further comprises a second injection gate body having front and rear opposite sides and a second aperture extending through the second injection gate body between an opening on the front side of the second injection gate body and an opening on the rear side of the second injection gate body, wherein the first injection gate body is connectable to and disconnectable from the second injection gate body (206 from the front side of the second injection gate body such that, when the rear side of the first injection gate body is connected in a connected position to the front side of the second injection gate body, the first aperture is adjacent the second aperture. a cavity plate assembly; a first injection gate body having front and rear opposite sides and a first aperture extending through the first injection gate body between an injection gate outlet on the front side of the first injection gate body and an opening on the rear side of the first injection gate body; and a first molding body connectable to and disconnectable from the first injection gate body from the front side of the first injection gate body and the cavity plate assembly from a front side of a cavity plate assembly, wherein the first molding body defines at least a portion of a first molding cavity configured to mold at least a portion of a closure for a container, wherein, when the first molding body is disconnected from the front side of the first injection gate body and from the cavity plate assembly, the apparatus is free from any structure that would prevent the first injection gate body from being connectable to or disconnectable from the cavity plate assembly from the front side of the cavity plate assembly, characterized in that the apparatus further comprises a second injection gate body having front and rear opposite sides and a second aperture extending through the second injection gate body between an opening on the front side of the second injection gate body and an opening on the rear side of the second injection gate body, wherein the first injection gate body is connectable to and disconnectable from the second injection gate body (206 from the front side of the second injection gate body such that, when the rear side of the first injection gate body is connected in a connected position to the front side of the second injection gate body, the first aperture is adjacent the second aperture.