The Border Model BT031 is a 1/35 scale plastic model kit of the Leopard 2A6 main battle tank in Ukrainian service. It features a metal gun barrel, reactive armor, movable tracks, and active suspension. The kit is designed for modelers and requires paint and glue to complete. It's a detailed model, offering a good base for weathering and finishing techniques for historical dioramas or individual displays. 

Here's a more detailed breakdown:

• Scale: 1/35 
• Subject: Leopard 2A6 Main Battle Tank in Ukrainian service. 
• Features:
  • Metal gun barrel. 
  • Reactive armor (likely referring to the ERA blocks). 
  • Movable tracks. 
  • Active suspension. 
• Materials: Plastic model kit, requires paint and glue. 
• Intended for: Modelers, with a focus on detailed building and finishing. 
• Special Edition: The first edition of the kit includes a metal barrel.
• Additional Details: The kit is designed to allow for sophisticated weathering and finishing techniques.