i think using condom to cover the barrel is NONSENSE..
cuz anyone who is in unit esp. infantry who did river ops, river
crossing etc, will know water WILL get into the rifle mainly
through the bolt carrier cover and the center part of the M16.
Anyway it doesnt matter EVEN if your rifle is soaked with water,
cuz it still shoots and works.
Our rifle is based on the percussion cap explosive technology not
the last time POWDER and igniting type. Well, sometimes too much
rush may cuz rifle to jam and chamber explosion, etc.
But using condom to water proof the rifle is CRAP!... 