A lil Gustav in your eyes
Somewhere in Aden, likely the Radfan mountains area, August 1963: “Royal Marines Demonstrate Army’s new anti-tank gun,” an early model Swedish-made FFV Ordnance Carl Gustav 84mm recoilless rifle.

45 Commando Marine Eric Pearson, of Salford, Manchester, prepares to fire the new anti-tank gun during trials at Little Aden. IWM A 34756.
In such an environment, “Charlie G” was sure to make a dust-up when fired, and you are gonna want some goggles.
Thus:

Marine Chris Pow, of Plymouth, firing the new anti-tank gun during trials at Little Aden. IWM A 34755
The 84s in the above images were the first crop of weapon adopted by the British as the “L14, Gun, 84mm, Infantry Anti Tank Weapon,” and later standardized with the improved M2 (L14A1) model after 1970.
It remained in service– seeing action in the Falklands– with the RM and British Army, especially the Paras, well into the 1990s when they were replaced by the more potent 94mm LAW 80 and subsequently the 150mm NLAW, disposable 84mm L1A1/A2 (AT4), and Javelin.
However, images have been seen of SAS downrange with the updated M3 Carl Gustav, showing that Charlie G still exists in some circles at least.