Nerf (stryfe) M4 like barrel

I present you, my Nerf M4 (look alike) barrel

I was looking for something to convert my Nerf Strafe into something more m4 like.
Since i didnt found all to much, i decided to make something myself. after all thats what we are here for right? ^^

The bottom part of the inner barrel is a break of part! once finished printing, break it of and maybe clean it a bit.

sidenote: This model is rather old, far from perfect and because of all the supports a pain to print.