Psychotic Gunner's Rear Wing Root

This is for my own DIY Strafe, replacing Air Raid's rear wings with this set, and it can be used to attach a set of wings from Skydive. Need to slightly trim off the tabs on either sides of the leg that holds the arm in alt mode for this piece to fit. 

Note: To remove the orinal metal rods from Air Raid's legs - use sharp blade to cut open the rubber vertical fins along the base until the metal rod inside is exposed. Pry to remove the rubber fins, and use a needle-nose plier to slide the metal rods out. This piece is tight enough such that you don't really need to re-insert the rods (but of course you can)