Welcome Barry,
I bought a fully functioning, semi-auto only, Bren. When I proudly showed it off here, I was informed that various parts were not correct and it was really a mash-up of numerous aged parts. I was able to buy and change the buttstock, carry handle, bipod and some other things and get it looking more like the real-deal. I would never have known without the help of the excellent chaps on this forum. Here is my most recent photo, I have subsequently also added an L4 'bipod attachment sleeve' (or whatever it is called) after a suggestion by Peter.