My SV "tribrid" has 9 ports on top. It is loud, and the fireball is spectacular, but I don't notice either anymore. It is very, very, flat shooting, the dot hardly moves.
I've been loading 11.0g of 3N38 over a 115 RP.
I'm considering a Vanek trigger on my 34, but I'm reading a lot of varying information on the legalities for USPSA Production Class and IDPA Stock Service Pistol Class.
Is there a definitive answer out there?