The Double Barrelled Tanks are one of the most recognizable patterns in the military industry. However, double-barreled tanks were considered a breakthrough solution for their time.
Every Double Barrel Tank in History — ConeOfArc
M2020, New North Korean MBT - Tank Encyclopedia
Update 1.7.1: Double-Barreled Tanks
Colossal Double-Barreled Heavies Are Coming!
Versuchstraeger 2-2 Panzermuseum by Khyron2000 on DeviantArt
Every Double Barrel Tank in History — ConeOfArc
First American Double-Barrled Tank TS-54
VT1-2 - War Thunder Wiki
M51 “Super Sherman” Tank. M51 “Super Sherman” Tank, by Tankhistoriaus
Update 1.7.1: Double-Barreled Tanks
Why weren't double (or more) barreled tanks a thing?
What are the two barrels like things in the back of a tank? - Quora
Why are double barrelled tanks not common? - Quora