Undercart
You may recall that the last version of the Army Lynx (Mk 9) introduced wheeled undercarriage (replacing the skids) at FLC request
(a) it makes manouvring the aircraft easy
(b) it imparts more controlled attenuation (esp in crash case)
The Mk9 wheeled u/c is a bit of a compromise (you lose some stroke compared to Mk3/8 to avoid losing centre console space).