The Thompson’s barrel fins were cooling fins that factories cut in World War II to speed up production, and their loss made little or no difference: in a burst of about thirty rounds, air cools the barrel too slowly to matter (by our rough estimate).
Sources:
– Rock Island Auction, Colt Model 1921 Thompson lot (“radial cooling fins”) –
– American Rifleman, “The G.I. Thompson in World War II” –
– American Rifleman, “World War II Thompson”
– Small Arms Review, article 2478
– Small Arms Review, p=37511 –
– Forgotten Weapons, “M1 Thompson” –
– Bridgeport Library, Auto-Ordnance history –
– Bin Wu (2005), barrel-cooling abstract –
– Wikipedia, Thompson submachine gun article –
– Wikipedia, Lewis gun article –
– Wikipedia, Blish lock article –
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source
they're all in finland
I know where one is
Holy crap
Worth a Kings ransom
Some fool will find that WW11 beauty in a bottom dresser drawer.What would you do?Europe
Officers and politicians are ALWAYS afraid the guns will be turned on them.
Hence the crap us troops are issued are hobbled to start with
Complicated and impossible to
compact
Tech and loop holes are in hot pursuit
I LOVE MY JOHN MOSES BROWNING 1911 NO PLOBLEM
A TOMMY WITH AN 80 RD DRUM OR TWO OR THREE
A trench broom is a hi cap pump shot gun with a bayonet
In WW I
Ai had ribs appear from being lathed instead of cutting a groove cut into something already there
Added note to the drums: the springs sucked in them like royal trash
Some tommy guns could still take the drum in ww2. The drum was affixed via a cut out that some still had
Some also made their own foregrips and shortened stocks to give more comfortable handling
Why is a soldiers pay pertinent?
Cheaper. The M1 Thompson was not their best model. The side bolt and fixed firing pin was a step backwards.
The bronze lock was basically useless anyway
you didn't answer anything
then after the war Nucky Thompson sold 1000 of the surplus guns for 10000 crates of fine Irish whiskey. 😂
Reminds me of the Type 92 one
Well drum mags were found to be not as reliable, so they would go back to stick mags instead for that reason. But they do still fit and of course I wish I had one with a drum mag
Original design also included a 1200 RPM fire rate. Later models had that down to around 600 i believe.
Not to me they're dead weight. Worse in a typical ambush engagement, they were only shooting for maybe ninety seconds, which leaves plenty of time for it to cool after the fight. In an entrenched situation, it's a waste of ammunition. In an experience hands, you end up with spray and pray behavior. I think the better modification would have been ten round burst
This has many functions this type of design. Grip can be one of them and cooling but also engineering for strength
Good old Chicago typewriter
Reduce weight lower costs of machining. Weapon was both heavy and EXPENSIVE
I wanna get my hands on an original
He made history. With this one.. so smooth. If you have never shot one. Your missing out… 20 rounds was about 2 seconds. But it was awesome.
Not only was it expensive, it was outdated by about 15 years at that point. We started fighting ww2 with ww1 weapons and it wasn’t going well.
So you're saying this expensive thing was already cheaper than before?!
Fins make it look cooler.
The blish lock never even worked in the first place.
That’s why the 1920s version of the Tommy gun was of a higher Quality and had a Blued steel Finnish and had a faster Fireing rate
Where are these guns now