I have just bought a deactivated 1928 Thompson and was hoping someone could help me with a few details on it, it has no serial number this appears to have been ground off at some point - it has a Lyman battle sight, a smooth barrel and a cutts compensator - I take it from the first 2 features it would be late in the production run, could anyone pin down what kind of date those features would be combined? On the main body inside and out are markings of GEG in a circle - what does that stand for. Would a gun in this configuration have been supplied to Britain during WW2? I cant think of any pictures of 28's with smooth barrels.
Thanks in advance
Alistair