3D Model: A Sci-fi Rifle With A Compact, Futuristic Design. The Body Is Rectangular And Streamlined, With A Slightly Bulky Upper Receiver And Smooth Surfaces. The Grip Is Angular And Ergonomic, Slightly Forward-leaning, With A Squared Trigger Guard. The Magazine Area Is Integrated Into The Lower Body, And The Barrel Is Short And Embedded Into The Frame. Add Subtle Mechanical Details, Small Panel Lines, And A Matte Metallic Finish With Dark Gray And Black Tones. Design It As A Modern Energy-based Rifle, With A Minimalistic Yet Functional Style.