. https://www.rifleman.org.uk/Enfield_Rifle_No.6_Australia.html. .
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. Historical Firearms - Australia’s Experimental 7.62x51mm Short Magazine...
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First sentence of the link : “The rifle pictured above is chambered in 7.62x51mm and has been adapted to feed from L1A1 rifle magazines.”
L1A1 is the British built FN FAL from the mid 50s… 7.62x51 is one of the NATO round.
The gun is interesting but this has nothing to do with WW2.
https://www.rifleman.org.uk/Enfield_Rifle_No.6_Australia.html
which is this rifle alone
The prototype rifles were mainly produced in 1944 and the Australian trials rifles in 1945. The first batch of these were the No.6 Mk.I rifles, initially with the original, but re-calibrated, S.M.L.E. tangent leaf rear-sight just moved rearwards on the shortened barrel.
not ones with magazines like this. Australian Lee-Enfield Rifle No.6 prototypeS - Zoeken