Luth-AR SOCOM M4 AR-15 5.56mm Threaded AR Barrel 14.5in SOCOM Carbine Length 1-7 Twist 1/2x28 Manganese Phosphate Black. 5 Chrome Lined with F Marked Front Sight Base profile barrel is perfect for your AR-15 build. It features a front sight tower for easy targeting and enhanced accuracy and longevity. The 1:7 twist rate is ideal for a wide range of bullet weights. Get the best performance from your rifle with this high-quality barrel. Specifications for Luth-AR SOCOM M4 AR-15 5.56mm Threaded AR Barrel: Manufacturer: Luth-AR Color: Black Finish: Manganese Phosphate Fabric/Material: 4150 CMV Steel Caliber: 5.56mm Barrel Length: 14.5 in Barrel Profile: SOCOM Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Barrel Material: 4150 CMV Steel Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Firearms Threads Per Inch: 1/2x28 Package Contents: Luth-AR SOCOM M4 AR-15 5.56mm Threaded AR Barrel What firearm models does the manufacturer say Luth-AR SOCOM M4 AR-15 5.56mm Threaded AR Barrel is compatible with? The manufacturer suggests that Luth-AR SOCOM M4 AR-15 5.56mm Threaded AR Barrel is compatible with AR-15Luth-AR BL-F14-7C: SOCOM M4 5.56mm Threaded AR Barrel 14.5in SOCOM Carbine Length 1-7 Twist 1/2x28 Mag Phosphate Black