Citat:Extra armament had been fitted to the fourth YB-29 to test it as an escort fighter... Two .50s were mounted in a nose turret and in each of four side blisters. The top and bottom turrets were retained with a 20-mm gun added to the lower turret and a 37-mm gun in the tail, for a total of 22 guns.
Citat:One experimental B-29-25-BW tested in October 1944 replaced the remote-controlled system with two conventional Martin top turrets, two Sperry “ball” turrets underneath, a one-gun Emerson barbette on each side of the nose, and a manual gun at each side blister.
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