I didn't mean barrel life in the sense that they couldn't incur/afford the cost of replacing barrels but more that it seemed to me that it would be a pain to have to have the rifles go back for what I assume is depot level maintenance (for barrel swaps) so frequently.
I don't know about the US Army soldiers, but Canadian soldiers are lucky to fire 50 live rounds a year so barrel life is not really an issue unless they are in a combat situation.


















































