Allow me to provide you with some of the information you are so desperately seeking.
On the G36 series it has been noted that the adjustments can do very little on the optical sights. While SRC may have brought up internal quality and external material quality it looks like they forgot to bring this site up to spec as well.
While the magazine in the G36 series locks securely, it has been noted that there can be a significant amount of play or side to side wobble of the stock magazine. Another brand of magazine may or may not solve this issue.
That should be enough to get your rolling.
"Its only a little bit on fire"