While the left is being typically disingenuous in trying to ban a particular firearm based on cosmetic details, I wouldn’t say that there is no humanly possible way to mistake the Sig for a stereotypical AR. Other than the lack of a buffer and the gas block, the upper and lower are very similar. If you don’t know what you’re looking for, or if you only catch a glimpse of the weapon, it would be reasonable to mistake the much less common MCX for the nearly-ubiquitous AR.
In the same time frame, local channel 4 reporter Bill Proctor, reporting on a Detroit shooting, said "Police are searching for a Smith and Wesson .357 Glock pistol"
Another drive by shooting where the witness, an old black lady, said "it sounded like an AK-47" like she knows what an AK sounds like.......
And the lies have been going on for over 25 years...........
As a side note, several evenings ago a local talk show host made the claim that automatic weapons are illegal to own. I was fortunate enough to get thru to him and correct him on air and inform him on the hoops that had to be jumped thru in order to get one and how much a typical M-16 might cost.........