If you zoom in you'll see a shadow of something like a sight. Not all thompsons have big complex rear sights. Some just have bent pieces of metal.
Also having an unfinned barrel and no cutts compensator does not means that it's an M1A1... Looking at that one I'd say there is a chance that it has the larger receiver of the M1928... so by no means is it definitely an M1A1.
It might be though!
If you zoom in you'll see a shadow of something like a sight. Not all thompsons have big complex rear sights. Some just have bent pieces of metal.
Also having an unfinned barrel and no cutts compensator does not means that it's an M1A1... Looking at that one I'd say there is a chance that it has the larger receiver of the M1928... so by no means is it definitely an M1A1.
It might be though!
There's deffo' no bolt handle and slide slot on the side of that receiver in that NZ picture, Yith's correct - it's a militarised 1928; the 1928A1.
During the war, 1928s were made with both ribbed and unribbed barrels (when the time consuming stock of pre-war made ribbed barrels were all used up), vertical and horizontal fore-grips (again, the militarised version 'should' have the horizontal, but the already produced verts were used up first) and with or without Cutts compensators (usually seen that the pre-war ribbed barrels had the cutts, and the militarised non-ribbed barrels didn't, but there was quite a considerable crossover period - as seen in the second picture below:) Theses are both 1928A1 guns, the first picture showing what I think is shown in the NZ picture (but minus the Cutts). Note lack of rear sight protection fins as also seen in the NZ picture (again, it's seen that both were and weren't fitted for whatever reasons):
A Proud Member Of 'Team Spleen!' who play mainly at Gunman Airsoft, Tuddenham, Suffolk.
That top picture is almost exactly how I've constructed my 1928 - complete with bent military rear sight (before they thought of putting protective ears on), but I have a finned barrel with straight foregrip.
I have a workshop drawing of the barrel which shows the unfinned version as an option, as well as threaded for the compensator and unthreaded for the ring of the blade sight.
i think that 2nd picture is quite interesting, looks to be partially 1921 version? well the stock anyway, with m1a1 barrel, and m1928 body? or is that a 1921 body?
Now a 'namsofter. I have an M72 L.A.W. for sale for 110 posted, PM if interested.
i think that 2nd picture is quite interesting, looks to be partially 1921 version? well the stock anyway, with m1a1 barrel, and m1928 body? or is that a 1921 body?
Looks like a M1928A1 to me.
did they have a similar barrel to the m1a1 or the 28?
sorry, not too hot on 21s 
Now a 'namsofter. I have an M72 L.A.W. for sale for 110 posted, PM if interested.
1921s are more likely to have finned barrels, but might have smooth if they were rebarrelled later.
