Thompson M1A1 only fit 20 and 30 round mags. No drums, those were earlier versions.
Wiki article:
(M1 and M1A1 models do not accept drum magazines)
Also, it would look better. This is not a war, just the facts. If you want drums, make a additional early Africa campaign style one.
Also... what's with the Luger? It's 9mm, yet 3 hit kill, while M1911 was .45 ACP! If anything, the M1911 should deal more damage, but fire slower.
Needs moar shotgun.
M1 Carbine and M1 Garand, anyone? And please research. Models =

for you. Good job, man.