Bren gun 100 rd magazine box

[T Creighton]

Hi Chris and welcome.
That is a nice looking box as it is. Can anyone explain how the drum magazine feeds the rounds in. I remember the Brens we had during compulsory military training in the 1950's had the banana shape magazines that slotted down from the top. They came in a box just like yours but I can't remember how many. The sergeant instructor would lay two alongside one another and then jump up and down because someone had mixed up the long and short magazines. (optical illusion) The Brens were great to fire and very accurate. Lying on the ground with bi-pod legs to steady we could usually get the 15 shots grouping withing a 3'' circle on the target.
Best regards, Terry