A few days ago I watched the scene where Blackout transforms and is fired upon by soldiers, a lot of people think bullets were bouncing off of him but I watched very VERY closely and saw that (for a split second) Blackout actually had bullet holes in his feet (for some reason I can only see it in 360p and can't in 1080p even though 1080p should be the clearer one.) but apparently his armor regenerated itself seconds after since in later shots (were Epps was almost squished by the Decepticon's feet) there weren't any damage. In the final battle in DOTM, if you watch closely, you can see that firearms used by soldiers actually does penetrate Sentinel Prime's armor and yet was totally ineffective against Shockwave (maybe he has thougher armor I dunno?) AOE TFs seemed like they were made out of paper so bullets were effective against them too. So what do you think, should some types of firearms be at least partially effective against Transformers or not?