JUST what I thought when I saw that pic (thread 12) RCS. It is an L1A1 in thread 10 and the magazine loooks like it's a UKmade L4 Bren mag because our L4 30 rounders were slightly curved whereas the Aust 30 rounders were straight.
Although I've never tried that double pistol grip on an L1A1, I have used a few zillion L1A1's and 2's. Quite how the front grip stayed firm attached to the laminated wood part of a set of laminated fabricated handguards, rivetted to the end caps was quite beyond me. And how was the grip affixed? Screwed to what? How did the two halves not separate under load? Think about it!
Mickey mouse watches spring to mind. Looks good for the folks back home - but not a lot of use when it comes to telling the time! Same applies to photo 12 I feel