In publicly available images, it is not uncommon to see field-modified FPV interceptors wrapped in reinforced tape. This has been observed repeatedly on rocket-shaped UAVs and fixed-wing drones.

Crews also attach metal strips or foil to increase the drones’ radar cross-section and improve their visibility on friendly radars. This makes it easier for the navigator and pilot to guide the drones to the point of engagement with the target.

This appears to be the most plausible explanation based on the materials used and the location of the modifications. These enhancements are typically applied to the areas where the airframe does not require additional structural reinforcement, fastening of fuselage elements, or external detonator wiring.