This is a LBE Unlimited Barrel chambered in 223 Remington, model ARBAR7-10.
LBE Unlimited is a leading producer of US Made gun parts and accessories" particularly for the AR-15 platform. Whether you're in the middle of an AR build or you're just looking to upgrade a key component" LBE has you covered with this 10.5" M4 Profile Barrel 1:7 twist" 5.56 Caliber" Nitride Finish
Features:
Chamber- 5.56
Contour- M4
Barrel Length- 10.5in
Twist Rate- 1:7
Gas System- Carbine
Diameter at Gas Port- .750
Thread Pitch- 1/2×28
Feed Ramps- M4
Material- 4142 Steel
Finish- Nitride