The shorter muzzle brake/ flash hider found on FAL's is known as the "Combined Device". They work quite well and can be had from DSA. Other brakes and comensators are all over the place. I have several DTA Mil brake that are less noisy and just as efficient as anything out there but they are no longer made.
Surefire and AAC makes some good ones for decent prices as does Smith Enterprise. The Vortex is available from Brownells for like $90.