Martin-Baker Mk.4 Ejection Seats – 3D Printed Detail Set for 2 Seats –1/48 – for Hawker Hunter, Jet Provost, Sea Vixen, Folland Gnat, Mystère IV, MB-326 Aircraft Models. Perfect for modelers building aircraft equipped with the Mk.4 seat, such as the Hawker Hunter, Jet Provost, Sea Vixen, Folland Gnat, Mystère IV, MB-326, and other 1950s–60s jets.