No, this isn't some prank made to fool you all; this item here, the Madbull Noise Maker is REAL. Designed to allow you to attach PET bottles onto your AEG / GBB to act as an amplifier or alternatively act as a silencer. Now you can hide in a bush somewhere and just stick a dirty PET bottle out of the bush and wait for some poor unsuspecting victim to walk by!
The Madbull Noise Maker features a 14mm CCW thread and the adaptor fits most PET bottles, though we suggest the usage of Coke bottles as well, they fit the most snugly.
It is illegal to make a PET bottle silencer in USA.