theres cheaper ways to have a quiet 10/22. mine sounds like a pellet gun. try a 16" barrel and a bolt buffer, and target ammo(slower than standard vel) or some of the subsonic ammo. i actually have the magnum research carbon fiber muzzle breaked 16" barrel and with the integral muzzle break its actually about 15 and a half inches of rifled barrel, it makes for a very quiet gun.