Here is a story from their website:
Enemy stronger than expected; so is SureFire
"My team was on rolling point just south of Fallujah when we detected an ambush. Underestimating the enemy force, we pushed through only to find ourselves outnumbered 3 to 1 and engaged by machine guns, mortar, and rocket propelled grenades."
"Shortly after making contact we were hit by two rocket propelled grenades, one of which impacted a foot from my head, breaking my arm, blowing out both ear drums, and dislocating my elbow. My M4 carbine, with SureFire WeaponLight, was blown out of my hands. After another hour and a half of fighting my team and I were medevaced and within a week or so we were back in the States. Later, when I got back my gear, I was amazed to find not only that my SureFire worked, but also that it was the only piece of my equipment that remained intact and functional—even my M4 had been destroyed."
"I served in Afghanistan and for two tours in Operation Iraqi Freedom. I've gone through a lot of gear during these tours and can testify the SureFire has passed my test."
"Thanks for making one hell of a damn good product."
Sgt. Eric K.
USMC
That's good enough for me! I've used my C2 as a hammer in a pinch with absolutely no problems. I also think an E2D would be a fine tool for breaking windows.