I think one of these things sat here in Midland, Tx at the Confederate Air Force for a couple of years and was eventually flown out to someplace else. It was a coastal patrol version with torpedo bomb bay.
They had about twice the armament capability than the B-17 and quiet a bit longer range. Was an impressive airplane.
The Lancaster wasn’t equipped with a ball turret gun position. Nor did if have a gun position in the radio operators station. The B-17 had both. The Lancaster was a good aircraft and could carry very heavy bomb loads.