A radar-aimed and ranged gun turret fitted to some Lancaster rear turrets in 1944. Identifiable by a radome mounted beneath the turret. The Lancaster has its origins in the dual-motor Avro Manchester which had been made during the late 1930s in response on the Air Ministry Specification P.13/36 for https://accurate-4350-load-data36925.dreamyblogs.com/472097/rumored-buzz-on-alliant-reloder-23