Hybrid metal matrix composites (MMCs) are increasingly important in industrial manufacturing sectors due to their enhancement of the mechanical and chemical properties. The study focused on examining the fabrication, mechanical properties, and microstructural characteristics of Aluminium 7075 (Al7075) with Boron carbide (B4C) and Graphene (Gr) composites. Al7075 is employed as the base metal, due to its lightweight properties, strength nature, and excellent castability. The addition of B4C and Gr enhanced the tensile strength, hardness, and wear resistance of the composites, while maintaining notable ductility. Boroncarbide is a material known for its lightweight properties and outstanding hardness, providing impressive wear resistance and high thermal stability. The material demonstrates a modulus that is almost double that of aluminium, highlighting its capacity to provide superior stiffness and strength while remaining lightweight, which makes it suitable for uses such as drive shafts, housings, and structural supports. The addition of graphite improves the lubrication properties of the composites. The composites were fabricated using a stircasting process, leading to a consistent distribution of boron carbide and graphite particles throughout the aluminium LM6 matrix. The hybrid metal matrix composites are created utilising four unique combinations of B4C at 3, 6, 9, and 12 wt%, with a consistent graphite content of 2 wt% throughout the process. The engineered samples of hybrid composites were employed to examine the mechanical properties and perform a microstructure analysis. The test results demonstrate that an increase in the weight percentage of reinforcements correlates with a rise in the tensile strength and hardness of the composites, whereas the percentage of elongation decreases with the addition of more reinforcement particles.