I am curently (partly) converting my Thompson M1 A1 ito a 1928 
Here are a few pictures from a 'Heros Day' event about a month back, and one from a 24 houre game. Either way you get to see the gun.
I'm in the prosess of making a cutts compensator, but the only problem is, the cc is wider than the m1a1 circular block sight,so may need to make a new one of them too.
enjoy
Hang on! (x) of you, (y) of me, dont mind playing Airsoft, I make that Pimms O’clock
yeah, like I said it was Heros Day, so we dressed up as film caracters
Hang on! (x) of you, (y) of me, dont mind playing Airsoft, I make that Pimms O’clock
could always buy a cutts compensator. AZR machine tools sell them. they are based in the phillipenes. the compensator itself is fairly cheap but shipping wont be
ok kl. Thanks Rhysd2, i'll keep that in mind
Hang on! (x) of you, (y) of me, dont mind playing Airsoft, I make that Pimms O’clock