shrike wrote:
Definitely Browning small frame (.30 cal) machine guns. Unfortunately they were made and used by practically all of the belligerents of WWII, readily convertible from one role to another (the basic receiver - core - could be built as an aircraft wing gun, a flexible gun, a tripod mounted infantry gun, or fitted, rather awkwardly, with a stock and carried by an individual) and the details needed to properly identify them are either eroded, or still buried under concretions.
Details to look for - aside from stamps or other markings, are the size and pattern of holes in the cooling jackets (corroded and covered in sea-stuff) and the material of the spade grips - wood - micarta or bakelite. Those might be helpful external clues in determining US or Commonwealth
Hi Shrike, thank you very much for your reply. I'm going to try working on them a bit further once I can take some better photos of them as they are, so I'll give it a shot to see if I can expose some more of the jackets. I'm afraid of the spade grips (!) - the first bit fell off as soon as I touched it, but the actual handle portion might be in a bit better condition, so I'll see if I can get a bit exposed there too. If I have any success and get them looking decent, I'll post some more photos. Thanks again for your help