86 killed, 500 wounded in Nice, France. Whether it is a truck or a gun, or plane it doesn't matter because they are just tools.
This needs to be said before ANY talk of gun control with your friends at work this AM: "Almost as deadly as the truck used in Nice, France". THAT is how you deflate your anti gun friends/family/coworkers/neighbors, etc.
With all of that being said, I don't think it was a legal Form 4 full auto, TRUE belt fed (MG3, M60, PKM, M240, M1919 etc.
Slide fire stock methinks. First one was a 50-75 rd drum while music playing. Very slow reload to the next magazine. Very VERY slow reload. Probably a slide fire stock or auto-glove that makes semi's bump fire (similar to full auto) and hard to reload.
There is a video on twitter that makes me believe this is an auto glove due to variable ROF (rate of fire) going up and down. Probably just the sonic rack and echos off buildings/walls. Lots of sonic noise break up that fools what is recorded and what we think we hear. Anyways,
I'd be willing to bet money that this will be the type of weapon:
1) Semi auto AR 15 or AK.
2) with belt fed upper (accessory) or regular upper w/ drum magazines/extended mags/etc. (ak drums are a PITA to reload)
3) full auto (DIY) that could be: a) with a bump fire stock (slidefire), B) ...possibly an auto glove....c) ECHO AR II trigger.
I highly doubt he used ATF form 3, Form 4, or Form 10 firearm according to Title 1 NFA of 1934/GCA68 weapons.
FWIW...prayers for the victims and to HELL with the gunman and the politicians whom will shortly be dancing on the graves of the citizens and the Constitution.