I found several problems with the sounds, such as inconsistency with animations, incorrect playback when shots are fired, and the absence of some sounds.
The M1A1 Thompson and Tommy Gun have a late sound in the first retrieve animation. Also the sound of firing in automatic mode is incomplete.
The M3 "Greese Gun" has a delayed sound when first retrieving.
M1 Carbine and M1A1 Carbine have incomplete firing sound when firing fast.
Springfield M1903 has incomplete bolt sound as in original DOI.
M1 Garand has incomplete firing sound when firing fast. Also the sound "weapons\arc9_doi\garand\handling\garand_magfetch.wav" is missing for normal and empty reloads.