I haven’t read everything on the Orlando shooting, but from what I have read it didn’t matter much what gun(s) he used. I don’t see anywhere in the articles that any of the patrons fought back. In other words, when you confine the sheep into the pen you have plenty of time to reload and continue the killing. There are plenty of first hand accounts of escaping but no account of anyone trying to subdue the shooter.
Again, the libs don't get self defense with a concealed firearm. The police and SWAT were too late to save those people.
Someone in that club could have put the dog down before he took his last life. It's a shame. "The only thing that stops a bad guy with a gun is... a good guy with a gun."