The aircraft has a combination tandem landing gear system in which the forward assembly consist of a retractable landing skid having detachable double wheels which are jettisoned on take off.
The skid will be build later on with the other wheels. For now here is the lower fairing assembly
There is an internal frame that is very much needed to form the part and also support the model later on.
Here is the assembly glued to the bottom of the fuselage.
Isaac