Bagcraft strap.

[Sapper740]

I have a couple of these straps (braces?) in my collection that I haven't been able to find any info on. Appears to be Pattern 37 and made by Bagcraft in 1945, they have all the appearance of a regular P37 brace but with a pistol ammunition pouch permanently attached. Any info on these greatly appreciated, I've posted some pics showing that it could be used as a shoulder strap for a pack, something that was mentioned in David Gordon's book but unfortunately with no pictures.