Lead & Steel LS9MM16-36 AR-9 9mm 16″ Straight Profile Barrel – 4150 CMV QPQ Black Nitride

Upgrade your AR-9 build with the Lead & Steel LS9MM16-36 9mm barrel, engineered for reliability and precision in a pistol-caliber carbine platform. Machined from high-grade 4150 Chrome Moly Vanadium (CMV) steel, this 16-inch straight profile barrel delivers outstanding durability and heat resistance whether you’re running it on the range or in competition. The QPQ Black Nitride finish provides exceptional corrosion resistance, a hard surface coating, and a sleek matte black appearance that holds up under hard use. At 16 inches, this barrel configuration qualifies for a standard rifle build, making it an ideal choice for shooters looking to maximize velocity and accuracy from a 9mm AR platform without the legal complexities of a shorter barrel. Whether you’re completing your first AR-9 build or upgrading an existing setup, the Lead & Steel LS9MM16-36 offers serious performance at a competitive price point. Shop online at Deep Roots Rifle Co for fast shipping nationwide, or stop by our Eustis, Florida gun store where our knowledgeable staff can help you find everything you need to complete your build.