The upper mold portion 122 may include components, such as slides, which may facilitate the formation of the attachment feature 72 (FIG. 1) in a manner that permits the housing 16 (FIG. 1) to be removed from the cavity 70, and/or core pins, which permit various portions of the mold cavity 126, such as the portion that defines the barrel 76 (FIG. 2) to be easily changed.