my son justin and i facination with silenced weapons and subsonic bullets

I share with my son the apreciation of these exotic system, he use to target practice using these 22 lr in silenced version, we tried 9mm in uzi, but the open blow back system of uzi is not ully muffled.

the best silenced weapon should have a matching subsonic bullet, meaning below 750fps velocity. we use the stinger 22lr you only hear the shells hitting the floor