Personally I’d recommend the SilencerCo Hybrid. Their customer service is top notch. I never have to worry about if I ruin my can because worst case is I have to wait another waiting period and pay the $200 tax… But I’m not out the money of the suppressor.
SilencerCo has also been a big player in educating the general public on the realism of suppressors. Before they really started pushing education, a lot of people thought silencers were completely illegal and unobtainable. They’ve helped several states get suppressors legal. I like to support them to help continue that kind of education.
Also I could be wrong but I believe the Hybrid handles bigger cartridges than the Gemtech.
30 cal would not work for 9mm. You’d ruin your can. The reason for this is because 9mm is a bigger diameter than 30 cal. 30 caliber = 0.308" and 9mm = 0.355" so the 9mm wouldn’t fit through the bore of a 30 cal suppressor properly.