Just finished putting an A2 Flash Hider on my SAR3 (Sorry, no pics!).  Looks bomb!  Makes the gun look tons better, the finish on the FH isn't too far off from the shit parkerizing on the rifle.  Luckily, my rifle already had the barrel after the FSB turned down to 0.50".  Took two and half peel washers to get it aligned properly (I couldn't cut the threads all the way to the FSB due to the conctruction of the cutting tool).  Used some Blue Loktite to secure, if it works loose, I'll go to Red.

Can't wait to shoot it.  With XM193 the fireball was TREMENDOUS.

I'll try to post pics later, but really, the rifle isn't much of a looker (Shitty Romanian park job and crap orange wood with glossy yellow varnish, typical SAR).  Shoots great though!