Only a modified muzzle can accept a suppressor, it was tried by the US Army and OSS in WWII Europe, and determined to be much less effective than the silenced M-3 "Grease Gun" or the silenced M-1 carbine, it was much too loud, and jammed far too much, the Project was canceled after only 6 weeks of development.
The Thompson as a suppressed weapon never became a reality, and never saw combat.
Costco.
The present day semi auto version is marked TM1, and is a copy of the M1A1 submachine gun. During the war, the 1928, M1, and M1A1 were used.
20 round box magazine, 30 round G.I. box mag, 50 and 100 round drums were not compatible with M1 and M1A1 Thompson models
The M1A1 Thompson submachine gun is better because it has better recoil but the PP-SH gives better bullet penetration. The Thompson is a British gun well as the PP- SH is a Russian gun.
Of course they CAN
If you have the time and money, you'd need to make a suppressor from scratch, since the average Thompson was not able to fit a suppressor.
the thompson m1 hast a smaller magazine 20 bullets the m1a1 has 30 dont know rest
M1A1 Thompson, Colt 1911, M1A1 Grand, and M1A1 Carbines (For Foot Solders)
BAR (Browning Automatic), Thompson Submachine gun. .45 caliber Colt m1911 pistol, M1 Garand, Sten, Bren (both of which are british) , Lee-Enfield, M1A1 Carbine.
.45 caliber ACP
It all depends of the company making it. A Tokyo Marui M1A1 Thompson would be better than a cheap Wal-Mart M4. But a Classic Army M4 would be better than a CYMA M1A1 Thompson.
M1A1 Thompson's were fed from stick magazines that came in either 20 or 30 round capacity. The most common being the 20 round magazine.