"Dear Lord why?
So much has been advanced since then, the XM8/G36 though interesting rifles have some serious issues, optics selection being the primary one. Heck even HK has moved on from the G36..."
Not an accurate statement at all.
HK is fully behind the G36 and it is selling very well world wide.
The G36 is one of the finalists in every weapon trial it's entered into. It also wins very often.
It's better in fact than the HK416. It's still their "flagship weapon". I was told by one of their lead technical people that many customers pefer the G36 due to it being simpler and more reliable than the 416 (and less expensive). The Federal German Armed Forces are moving forward with an updated and improved version of the G36. It will have a collapsing / folding stock (that can be fired folded), metal fore grip, and a much needed improved optical sight on a lower, proper picatinny rail. I checked it out, very functional. I didn't get to shoot it and I've never seen any pictures released showing it yet.
Please spare me the theme regarding the poor standard optical sights. The weapon can be ordered with low profile metal picatinny sight rails and you can put on what ever sight you desire, just like any other rifle.
Rich