I saw the Angel Custom "FPS-UP" Mock Silencer on evike but noone else sells them and there is not one video of it on youtube!!!! No reviews anywhere on a forum and no video makes me believe it doesnt work/fake/scam to get you to buy it. Does it work? $40 for a device that says 30-80fps gained? The problem I see with it, using a 6.01 barrel, going from a 6.03 TBB inner barrel to an silencer that is 6.01 major problem?