I have a P320 TacOps that I suppress with a Griffin Optimus. Works great.
You DO have the booster installed, don't you? And the booster spring is installed around the piston? I'm guessing you're using the booster because I don't believe Griffin makes a 13.5x1LH threaded fixed barrel adapter.
I only ask because you didn't say how much experience you have with suppressors.
I'd be interested to know what model suppressor you have, and do you have another gun you could try the suppressor on?
"Extremism in the defense of liberty is no vice. Moderation in the pursuit of justice is no virtue." - Barry Goldwater
Posts: 1950 | Location: Minnesota | Registered: February 23, 2002