SO how did they keep the liner in?

[moaning minnie]

Also there are other factors to be taken into account...1-whether the liner is a M1 helmet liner or a M1 combat liner.2-how much texture and paint.3-if the liner is pushed in slightly off true dead centre this effects the tightness of the fit tremendously.....regards Dave.

[jumpingjank]

also remember if the helmet has a dent or two in it .it can sometime push the liner out a little i noticed that with one of mine.cheers