Upgrade your firearm or complete your custom build with the Diamondback 9X1945M50B984NFR. The 4.50\" black nitride barrel, an exquisite piece by Diamondback, is made of robust 4150 CMV. Enhance your gun's performance or complete your setup with this barrel's superior durability and build quality.\n\nSpecs:\n- Caliber: 9mm\n- Barrel Length: 4.50 inches\n- Barrel Twist: 1:9.84\n- Barrel Finish: Nitride\n- Material: 4150 CMV (Chrome Moly Vanadium Steel)\n- Threaded Barrel: No\n- Firearm Fit: AR-15\n- Weight: 0.60 lbs (9.6 oz)\n- UPC: 815875019244\n- MFG. Part Number: 9X1945M50B984NFR\n- SKU: ACC-DIA-9X1945M50B984NFR\n- Not shippable to CA, IL, WA