Roughly half way along the length of the 120mm cannon barrel of the M1 Abrams tank there is an oblong bulge. What is it?
It’s a bore evacuator. It keeps the gun gases moving forward and out instead of moving back into the tank after firing/during reloading.
This was just asked and answered recently in this thread.
Ah, thanks. Sorry I missed the earlier thread. Did a search, but…oh well.
“What’s the bulge in the Abrams cannon barrel?”
It’s glad to see you. 