Climbing in and out of windows, crawling a long way, the gun gets a hard time, so may be the AUG is tougher than many others. Really work hard at getting that HOP dead right, the difference it make justifies the time spent. Practice your quick change for the battery. Thirty seconds or less is a good time to aim at. Do it in cover with a cocked pistol to hand.
Short bursts are easy.
Pull the trigger all the way and release. The whole process takes a second and fires three or four rounds. The quote so far is USD90 with shipping, so find my plastic. A magnifying red dot and laser set up for night work or darkened indoor scenarios is also desirable. As for the HBAR set up, time will tell, the far side of the TMP I suspect.