NStrike Stock Extender

I got tired of Nerf stocks that were just a bit too short, so I created an extender. Every one of these
will add 30mm to the length of your stock.

Credit goes to these two designs:
https://www.thingiverse.com/thing:5467370 by Foamsnake (NStrike male end)
* Used the male NStrike end
* Shortened the end by 1mm to get a stronger catch
https://www.thingiverse.com/thing:3531616 by ilbandguy (NStrike female end)
* Used the female NStrike end
* Modified the top of the attachment point to change the shape a bit
* Modified the catch to uncenter the catch and make it compatible with more stocks
* The catch cover is unchanged

Parts Required:
2 small springs (I used 0.016dx0.2x0.59 / 0.4*5*15mm 10 lap, but a pen spring should work fine)
4x M3x6mm or M3x8mm Screws with as thin a head as possible

Instructions:
1. Print out the adapter and the catch of your choosing. 
2. Add the springs around the pins on the catch and insert into the female catch.
3. Secure the catch cover over the catch and secure with the 4 screws.