I tried the Bren magazine box and it’s too tall as well.
I’m leaning towards there being a canvas flap (red rectangle)along the front of the tray. Bottom edge riveted to the tray. Then at either endow of the canvas flap there is a P37 web strap/buckle/tab (blue rectangles) to keep it in place.
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Jordan Baker
RHLI Museum,
Otter LRC
C15A-Wire3, 1944
Willys MB, 1942
10cwt Canadian trailer
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