Provided is a cap for an injector comprising a syringe with a needle cover. The cap comprises a first cap body part in the form of a sleeve having forward and rear openings; a second cap body part in the form of a plug arranged for receipt by said forward opening of said sleeve form first cap body part, wherein said plug form second body part defines a plug top and an inner plug body, and wherein said inner plug body defines a protruding pocket; and arranged for receipt within said protruding pocket of the inner plug body, a metal connector defining plural needle cover gripping elements arranged around a central hub, wherein each gripping element is provided with one or more barbs for gripping the needle cover. The first cap body part, second cap body part and connector are provided as separate parts. In the assembled cap, the plug top of the plug form second cap body part forms a cover for the forward opening of the sleeve form first cap body part, and the needle cover gripping elements of the connector extend into the sleeve form first cap body part.