The Tenet Flux Rifle is a high-tech energy weapon featuring a sleek, futuristic design with a predominantly metallic construction. Its elongated barrel is accentuated by glowing energy channels that pulse with a vibrant, luminous color, indicating its charged state. The body of the rifle is adorned with intricate, ornamental engravings and has a slightly asymmetrical form, giving it a unique, advanced appearance. The surface is smooth with a glossy finish, contrasting with the rough, textured grip for enhanced handling. The weapon emits a faint hum and a soft glow, suggesting its powerful energy-based functionality.