Mike,
ORIGINAL: DaveC
BTW, I only run one of anything up top and an STS below.
Sho-nuff, STS under the grip, silencer on top. I came up with this set up after test shooting in my ground blind. The one silencer up top really took out whtever the sts left behind noise wise. It wasn't easy to hear until shooting inside the enclosure- night & day difference inside there (before & after)
This is only on the tribute, on the Pat the silencer on top did nothing for it.
Did you finally give up on your STS?