Lead & Steel Match Grade Barrel Features The Lead & Steel Match Grade Barrel is machined from 4150 Chrome Moly Vanadium steel a material prized in AR-pattern barrels for its combination of strength and heat resistance under sustained firing. A QPQ black nitride finish is applied over that steel adding corrosion resistance and a hard low-friction surface that extends the barrel s service life compared to standard phosphate coatings. The 1:7 twist rate stabilizes the heavier bullet weights common in modern 5.56 loadings giving the barrel a broad working range across bullet weights. A government profile with a dimpled exterior gives the gas block a secure repeatable mounting point reducing the chance of gas block shift under recoil. At 10.5 inches this barrel is built for compact AR-15 pistol and SBR builds where overall length and maneuverability matter as much as accuracy. The carbine-length gas system is matched to that shorter barrel length to keep the action cycling reliably across a range of ammunition. A 1/2x28 threaded muzzle accepts standard AR-15 muzzle devices compensators or suppressors giving the builder flexibility in how the barrel is finished out front. Weighing 18.40 oz the Lead & Steel Match Grade Barrel is a solid foundation for a compact match-capable AR-15 build available for sale at GrabAGun. Lead & Steel Match Grade Barrel Specifications Manufacturer: Lead & Steel Model: Match Grade Caliber: 5.56 Barrel Length: 10.5 Twist Rate: 1:7 Barrel Material: 4150 Chrome Moly Vanadium Barrel Finish: QPQ Black Nitride Thread Pitch: 1/2x28 Weight: 18.40 oz Available At: GrabAGun