The Army examined the T1 in December 1927, but expressed more interest in the design than the caliber.
He then modified the existing design for the .276 cartridge.
The result was designated T3 in 1929.
30 M1 on August 3, 1933.
Production of the gas trap M1s proceeded through to mid-1940 when the rifles design underwent a major change.
Garand cured the problem by converting the rifle from a gas trap to a gas port operating system.
