Considering getting a 5.56 PSA Sabre upper in the New Year, but on several you tube videos, I notice that the Sabre seems to hum like a tuning fork, this would annoy the ever loving crap outta me.
The video makers never seem to point this out, except for one, and I can’t fine the video any more to paste a URL here.
But help me decide on a Sabre upper or a BCM upper.