Suppressors not only deaden a rifle's report, but they also contain muzzle flash. Both help reduce the signature—or the indication of presence—of the shooter, which is a big plus for law enforcement and military snipers.
For civilians, Total Signature Reduction means less risk of hearing impairment, since the sound is partially contained by the suppressor. You'll still need ear protection when shooting supersonic ammunition, as the crack of the bullet breaking the sound barrier is still present. However, the overall report is greatly reduced, which makes a suppressor-equipped rifle a pleasure to shoot and particularly applicable when firing on indoor ranges or those adjacent to developed areas.
Training with rifles when the entire group is running suppressed guns is a real joy. Instructors need not shout over multiple gunshots, and students can hear pointers delivered during a string of fire with no problem. Other bonuses: There's not as much dust and dirt kicked up on the firing line when the rifles are suppressed, and less recoil from suppressed guns means no sore shoulder after a day of sending 7.62 NATO rounds downrange. (800) 828-8809; www.surefire.com