Oh no i definitely hadn't run out of ammo, I forgot to mention, that was after i disarmed the first mine... so hadnt shot anyone, i shot at a fish to test out the rounds, then reloaded and the UW went away. but im still on the same mission and the UW rounds are still there. Maybe it was just a glitch or something? Ill restart the mission and see what happens.

I seriously hope i'm not being that much of a noob haha! Although on my Fraps recording it does state UW, until I fired and then reloaded then the UW went away for some reason. If that means its changed to STANAG rounds, why does it do that on its own? Confused.com