What an AWSOME picture......look at the detail and gear in that shot....BAR spares leather box and oiler......a what looks like USMC TAC mark on the bayonet scabbard and what looks like a WW1 BAR...(long foregrip possibly checkered)...spmetimes non "combat" photos are better than action ones for details.
Yep Harlan....agree on the B M Co long scabbards but they were all marked with the US (army) flaming bomb rather than the US Navy MK1....this wasnt a reference to the scabbard but the "plastic" bayonet and scabbard combined.
NOW i am not saying that some enterprising marines didnt end up with an M3 USN MK1 scabbard after his M1910 scabbard fell apart as i am prone to saying never say never....as a singular photo can often prove you wrong....
Interesting discussion..i think
Regards
Lloyd