I've made a server-side mod which removes the portable MG42s in Medal of Honor Allied Assault Breakthrough from all maps. (stationary MG42s remain)
Add zzz-portMG42_removal.pk3 to your server's maintt folder
default location is C:\Program Files\EA GAMES\MOHAA\maintt
: only server needs this file
MOHAA Breakthrough remove portable MG42s mod - link - 25KB
Thanks to Hal from http://modtheater.com for the info to do this.