45 Remington-Thompson cartridge headstamp

The .45 Remington–Thompson was an experimental firearms cartridge designed by

Remington Arms Remington Arms Company, LLC was an American manufacturer of firearms and ammunition, now broken into two companies, each bearing the Remington name. The firearms manufacturer is ''Remington Arms''. The ammunition business is called ''Remington ...

and Auto Ordnance for the Model 1923 Thompson submachine gun, a variant of the Model 1921 with a longer barrel, with the intent of increasing the power and range of the weapon. While some variants of the 1923 were produced, the rifle and round did not find commercial success.

References

{{DEFAULTSORT:45 Remington-Thompson Pistol and rifle cartridges Military cartridges Abandoned military projects of the United States Remington Arms cartridges