Product Description Lead & Steel AR-9 LS9MM16-36 16\" 9mm 4150 CMV QPQ Nitride Barrel for AR-9 Platform. Lead & Steel AR-9 LS9MM16-36 16\" 9mm 4150 CMV QPQ Nitride Barrel for AR-9 Platform. at Classic Firearms Browse all Classic Firearms deals $99.89 In Stock at Classic Firearms Buy Now at Classic Firearms Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Lead And Steel MPN LS9MM16-36 Accessories Lead And Steel