I used an ARES TAVOR this past Sunday (28 Jun.) all day at an OP. The gun performed flawlessly.
Yes the red dot sucks, but I expected it to. Most factory installed red dot sights suck, so it's no surprise this one does too. Laser...I don't care, I never use them anyway. I didn't even attempt to zero the laser or red dot. I just left them off, and centered my victims in the glass on the MARS.
I had concerns about accidentally dropping mags due to the location of the mag release. However that only happened once, the 1st time I transitioned to my weak side. After that no troubles