During an over-zealous attempt at some spirited outdoor flying, the 120 SR plummeted about 80 feet onto my concrete driveway.  This left me with a broken tail rotor, and landing gear in 4 pieces.  I ordered a couple of spare rotors, and began pricing landing gear.  The stock gear can be had for around $6, but for about twice that price, I opted to upgrade to the MIA landing gear.  The MIA gear is significantly more resilient, and weighs a little less than the stock gear.  The wider A-frame design spreads the weight out more, which helps with stability on the ground and in the air.  MIA CNC cuts the struts from G10 fiber material, and the skids are hollow aluminum tube. 

120 SR with MIA G10 composite struts and aluminum skids.

If you're not familiar with G10 material (branded as Micarta or Garolite), it's some pretty amazing stuff.  It's a continuous woven glass fabric impregnated with an epoxy resin under very high pressure.  The material looks (and feels) a lot like thin cardboard, but is amazingly strong.  Basically a thin fiberglass on steroids, it has the ability to return to it's original shape even after some pretty grueling torture.  Based on standard ASTM tests, G10 has a Flexural Modulus of Elasticity around 2.7 million psi, and a Compressive Strength of 60,000 psi with a 10% deformation at yield.  For the layman, that means it is practically indestructible when used as landing gear on a 100g helicopter.