This is a CO₂-powered air pistol kit (often used for target shooting or plinking).

Key items visible:
• CO₂ air pistol (likely .177 / 4.5mm pellet)
• CO₂ cartridges (capsules) – the silver cylinders
• Pellet tins (Diabolo, Premier, etc.)
• Hard carry case with foam
• Accessories (cleaning bits / seals / small parts)

👉 This is NOT a firearm — it’s an airgun, but still regulated in some contexts.