Airsoft magpul masada improved replacement hop up nub holder

Hey all,
For awhile I've been meaning to create a new design of hop up nub holder for my genuine airsoft Magpul Masada. I designed this thing from the original holder while allowing the holder to incorporate standard rubber nubs instead of the "figure of eight" type nubs (this also increased the strength of the holder). I also redesigned certain parameters of the holder to allow the holder to further increase the applied spin on the BB within the chamber. This is a known issue with the genuine