Any NATO 5.56mm caliber rifle on up. The French use the FAMAS-F2. America uses the same round in the M-16 series and M-249 light machinegun. The round was invented in the USA in the 1950s by Remington as a squirrel hunting cartridge.
The rifle that did that damage was the least-powerful weapon the French troops had. No tear gas, no riot control or non-lethal crowd dispersion at all in this video. Just firearms.
This was a massacre.
You assume too much. The vidoe does not show French troops shooting at those victims.
Damn, you're not kidding. And our media and the left have their panties tied in knots over a US Marine defending himself by wasting a terrorist.....