Fits older models of Daystate air rifle including;  Harrier X, X2, MK3, MK4, Air Ranger, Merlyn, Huntsman Classic, Huntsman MK2, Grey Shadow, Panther, QC, AirWolf, MVT, Regal, Revere,  Red Ranger, Timberwolf, MVT, MCT, Buckmaster, Pulsar, Renegade etc/

Some models are fitted with the triangular screws, our screws replace these and use the same head size as the other bolts on the front of the action.