This M4-Contour AR-15 Barrel is fully chambered and ready for installation onto a host upper receiver. The barrel features a true 7.62x39 Chamber. The barrel's M4 Contour sheds excess weight and bulk, and comes complete with the military standard M203 cut. This barrel is an excellent choice for a general purpose AR rifle build that's perfectly suited for use at the range, in a 3-Gun match, or in the field pursuing game. Barrel nut, handguard cap, fixed front sight base assembly, barrel extension, and locator pin are included and factory installed. The FSB is installed after the barrel is coated.
16" M4 profile
Material: 4150 Heat-treated Gun quality steel with chrome lining
Muzzle: 5/8x24 thread
Twist Rate: 1/9.5
Finish is : Mil-Spec Phosphate
M4 feed ramps
Carbine Length Gas System
Barrel weight is : 2 Pounds 3 ounces
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Looks great, works great. Test fired today with zero issues.