+1 Kevingibson
I've watched the FBI analysis of this and their views on changing weapons.
I think that the real issue was the the FBI was going up against a pair of hard men that would and could shoot. The bad guys ID'ed the FBI and had enough time to gear up mentally for the fight and took the initiative in the opening engagement. Bad luck and bad planning(lack of rifles) contributed to the FBI's losses.
Fortunately most people LE comes up against are usually not competent or willing to take it to the max like these two individuals. I'm not insulting LE but the facts are facts.
With that being said I fear what may popup in the not so distant future with terrorists, cartels, and military trained gang bangers in our country.
