I'm wondering how supressors are effective. From what I understand, you need a subsonic round for it to work? How then would a silenced rifle like an m4 or ak be effective at all, when rifles need velocity? And how does a supressor affect rnage/accuracy? To me I have never wanted one and usually advise friends who are old enough for class 3 stuff not to get one, but could someone explain this to me,?am I giving good advice?