Lead & Steel Barrel Features The Lead & Steel Barrel is turned from 4150 Chrome Moly Vanadium steel and finished in QPQ black nitride a combination that provides both mechanical strength and resistance to corrosion and fouling buildup. The government profile contour keeps the barrel rigid despite its short overall length helping it hold accuracy as it heats up during rapid strings of fire. M4 feed ramps are machined into the barrel extension area to improve feeding reliability particularly important in a pistol-length build where cycling dynamics are more demanding than a full-length rifle. At 7.5 inches this barrel is built specifically for compact AR pistol platforms where maneuverability in tight spaces is a priority. A 1:7 twist rate stabilizes the heavier bullets commonly loaded in .300 AAC Blackout giving the barrel consistent performance across both supersonic hunting and target loads and subsonic suppressed loads. The 5/8x24 threaded muzzle is ready to accept a suppressor compensator or flash hider without any additional machining. At 21 oz the barrel keeps the front end of a compact build light enough to stay fast on target. For builders assembling a short maneuverable .300 AAC Blackout AR pistol who want a durable nitride-finished barrel with reliable feeding the Lead & Steel Barrel is available for sale at GrabAGun. Lead & Steel Barrel Specifications Manufacturer: Lead & Steel Caliber: .300 AAC Blackout Barrel Length: 7.5 Barrel Type: Pistol Length Twist Rate: 1:7 Barrel Description: Government Profile Barrel Features: M4 Feed Ramps Thread Pitch: 5/8x24 Weight: 21 oz Available At: GrabAGun