Elevate your firearm with the CMMG Mk4/AR-15 Upper Receiver Assembly in a sleek Armor Black finish. Designed for precision and durability, this upper receiver is crafted from high-quality materials to ensure reliable performance. The assembly features a standard Picatinny rail for easy attachment of optics and accessories, making it perfect for both tactical and recreational shooting. With its lightweight design and robust construction, the Mk4 is an ideal upgrade for any AR-15 enthusiast looking to enhance their shooting experience. Get ready to hit the range with confidence!
