I would wait for real experts, before jumping to conclusions.
Same picture, different opinion - https://twitter.com/vilnezheettya/st...837952/photo/1
This should be much-much easier to detect than the missile because of the speed.
Russia is silent on this today but the West is already unwrapped all the propaganda guns and firing at will, many people already "sure" that it was the rebels and they got their weapons from Russia. It's massive brainwashing with no real evidence.
Some people however see resemblance of the tactics that were used "proving" Iraqi WMD.