This is why US troops didn't use drum magazines in Tommy Guns
3d thompson 1928a1 drum magazine model
Amazon.com: Voluart Splat Gun- M4 Pro with High Capacity Drum Magazine, Gel Shooter Can Hold 1300 Gel Ball- Battery Powered- for Backyard Fun and Outdoor Games (Blue) : Automotive
Drum magazine hi-res stock photography and images - Alamy
Bren 100-round Drum
M4 Assault Rifle With Optic Scope And Drum Magazine Stock Photo - Download Image Now - iStock
SKO-12 12ga Semiautomatic Shotgun w/Drum Magazine - Standard Manufacturing LLC.
Shooting a Bren 100-Round Drum - YouTube
During the Second World War, was the round drum magazine ever used with the Thompson Gun? Or was the straight up and down magazine the standard issue? - Quora
Drum magazine - Wikipedia
This drum mag could be the answer for Marine IAR gunners who need to pour on the fire