No help, but a rant of my own on the AUG...
What the hell is with TM and two piece outer barrels?! Instead of one nice stiff metal barrel that's secured near the mechbox at the rear and the twist lock up front, they just had to use plastic with a wimpy aluminum sleeve for the inside half. Did they not realize that the twist lock only holds the upper half of that plate secured, and that the lower half is free to flex away from the gun? At least they fixed it for the M4 new type. Sadly, it appears the AUG is not popular enough to warrant such an upgrade.
Any time I rest my HBAR on its bipod, the front half of the barrel flexes up about 5-10 degrees
That's why I only use the para/SMG barrel now... It's one piece since it's so short.
That said, damn, she's a real workhorse that won't stop kicking... It was one of only a couple of guns to survive both the entire day playing in -18 degrees, where about three quarters of the guns went down within the first 10 minutes (mostly battery problems), and in torrential down pour where about half the guns went down just the same (it was raining so hard and fast, I had to tip my beloved AUG every few seconds because the rain had filled up my reflex sight and I couldn't see though it anymore!
)
I'd say the physical design probably helps it here - the diamond cross section drives water away from the battery/motor/selector and trigger contacts, and the rear placed battery is kept warmer by your shoulder and arm if you hold it tightly.