Extended arms for 'Crossfire' quadcopter (printed)

This is my project to make sturdy 3d-printed arms, witch have a length of 400mm. With more arm length the copter will be more stable in the air.

This design include 2 separate arms connected with 2 bolts and nuts.

In case of a bad crash with damage to one of the arms you just print out the piece that you need.

Let me know what your thoughts are with this design.

Its already printable, but i am thinking of separate 'legs' which absorb the landing and easily snap off when you hit the