futuristic energy core 3d model

A futuristic sci-fi grenade with a compact, angular design, made of brushed titanium and carbon fiber. The grenade features glowing neon energy lines running across its surface, a transparent core showing a pulsing plasma reactor, and a holographic digital timer. Subtle wear and battle scratches add realism. Hard-surface mechanical details, realistic PBR materials, cinematic lighting, ultra-high detail, game-ready 3D asset, isolated on a dark background.