Do Oil Filter Silencers even work?

Found some old footage and put together a video about oil filter silencers! This is legal and we are appropriately licensed. Old vid was deleted at 70k views, so I recut and made it fit the guidelines. Link to gear load out and links is here: oil filter silencer,oil filter silencer ar15,oil filter silencer for gun,oil filter silencer ar,oil filter silencer first test fire,oil filter silencer attachment,oil filter silencer for 10/22,oil filter silencer video,oil filter silencer napa,oil filter silencer for 22 rifle