Connector receptacles that can be easily and reliably assembled to form ground shields. One example provides an inner shell having one or more alignment features and an outer shell having one or more corresponding alignment features. The one or more alignment features on the inner shell may mate with the one or more alignment features on the outer shell. When the one or more alignment features on the inner shell mate with the one or more alignment features on the outer shell, the outer shell may be mechanically secured to the inner shell, the outer shell and the inner shell may be electrically connected, and the outer shell may be aligned to the inner shell. The alignment features may be protrusions such as dimples, openings or holes, or other features.