Can the weapon system used be determined from the available evidence?

[william wiley]

Mike, there is not a shed of doubt in my mind that MH17 was taken down by a BUK M1, using a 9M38M1 missile.
But that is because of the evidence we already have of the ONLY BUK missile system that was recorded on multiple videos and pictures from the 17th of July.

But there are no photos or videos of a buk in Eastern Ukraine confirmed or verified to be taken on July 17 2014. There are photos claimed to be but they seem to be from earlier dates.