The Grant Hammond pistol was a pistol with potential.
The major 1907 US military pistol trials sunk all hopes of this weapon.
See Ian from Forgotten Weapons examine the Grant Hammond Trials Pistol.
In the world of military weapons trials, many weapons are tried, and few are picked. The others fade to obscurity. This is certainly the case with the Grant Hammond .45 pistol.
This very accurate .45 ACP chambered pistol had, in the first few prototypes, a magazine that would eject automatically when the pistol ran out of cartridges. Sadly, only a small amount of trial pistols were ever made.
This pistol had promise until the major 1907 US military pistol trials. It was not picked and the death blow was dealt to that design.