Here's a pic from the book "trench" by Stephen bull I've been reading- Two Kiwis holding a captured--- anti-TANK (?!) gun! Can anyone tell me more about it? Thank you!
(Picture credit author Steven Bull- "Trench")

Description and history are HERE

Thanks Vern!

There was a similar rifle Built by the British in WWII. The Boys .55 anti-tank rifle. Used by several countries including the US>

https://en.wikipedia.org/wiki/Boys_anti-tank_rifle

The story is the Pershing got one of the rounds of the rifle and was so impressed that he sent it home for development. And the US came up with the .50 caliber HMG.

Must have been enjoyable to fire

The channel "forgotten weapons" (one of my favorite yt channels) made a video about it
https://www.youtube.com/watch?v=ko9A3ZbN8ZU

C&Rsenal made a 30min special about it
https://www.youtube.com/watch?v=_mWeNNiG9YU

Preview of C&Rsenal of it being fired
https://www.youtube.com/watch?v=wvJbIkuZIro

Enjoy the vids, i sure did when i watched them a while back