Product Description The Ballistic Advantage Classic Series Carbine Government Barrel is a precision-engineered 10.30" barrel chambered in 5.56x45mm NATO, purpose-built for AR-15 platform configurations. Machined from premium Chrome Moly Vanadium (CrMoV) steel, this barrel features a chrome-lined bore and chamber that deliver outstanding corrosion resistance and extended service life. The manganese phosphate finish provides a durable matte black exterior coating, while the phosphate-coated M4 feed ramp extension promotes consistent and reliable feeding across a wide variety of 5.56 NATO ammunition types. A 1:7" twist rate stabilizes a broad range of projectile weights, and the carbine-length gas system ensures smooth, reliable cycling. The threaded muzzle with a 1/2x28 thread pitch accommodates popular muzzle devices with ease, making this barrel an excellent choice for short-barreled rifle builds and compact tactical setups. Product Highlights Machined from Chrome Moly Vanadium (CrMoV) steel for exceptional strength, durability, and long-term performance Chrome-lined bore and chamber resist corrosion, simplify cleaning, and extend barrel service life Manganese phosphate (black phosphate) finish delivers a tough, low-glare protective exterior coating Phosphate-coated M4 feed ramp extension ensures reliable feeding for enhanced operational dependability 1/2x28 threaded muzzle and carbine-length gas system ideal for compact AR-15 and SBR configurations Specs Brand: Ballistic Advantage Model: Classic Series Caliber: 5.56x45mm NATO Barrel Length: 10.30" Profile: Carbine Government Material: Chrome Moly Vanadium (CrMoV) Steel Finish: Black Manganese Phosphate Bore: Chrome-Lined Chamber: Chrome-Lined Twist Rate: 1:7" Gas System: Carbine-Length Gas Port: .070" Crane Spec Thread Pitch: 1/2x28 Feed Ramp: M4 Extension, Phosphate Coated Compatible Platform: AR-15 UPC: 819747020185 MPN: BABL557103MC Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>