Design a sleek futuristic sci-fi assault rifle for elite space soldiers. The gun should feature a metallic body with glowing neon lines, a holographic ammo counter, and modular parts like a scope and energy bayonet. Use dark carbon fiber and brushed steel materials. Include a top-mounted digital targeting system and side alien insignia. The magazine must be a separate 3D model, slightly transparent to show glowing energy cells, with visible mechanical connectors for realistic attachment. Style inspired by Halo, Destiny, and Cyberpunk. Make it look powerful, high-tech, and zero-gravity ready.