Posted: 7/18/2009 10:49:25 AM EDT
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i bought an upper a while back that had a phantom vortex flash hider installed on it. i had it out on the range today for the first time, and noted a distinct ringing each time i shot...almost like a striking a tuning fork. has anyone else experienced this?
i am just curious...the upper ran fine, and it seems to be reasonably accurate. -matt |
it's a design feature. 
if you run shoot-through muzzle caps in the field, it will not ring until cap is 'removed'. the old ones had an annular groove that you could put a loop of wire around to keep branches from snagging (or the Vortex from ringing) but the warning was slight degradation in performance. |