Worker Hurricane Mag Adapter

There were a lot of people asking for an editable version of this so I re-created the adapter from Jan333r's STL.

I have reworked the entire model adjusting tolerances and adding style. If you find any problems please leave a comment.

CHANGELOG:
5/31/19 V3.2
• Added Grips to aid in removal from Hurricane

5/19/2019 V3.1
• Fixed detent position
• Added locking nub.
• Moved magazine position forward to reduce jamming.
• Narrowed magwell slot and added cut out so magazine locks in pla