USED Tippmann Arms M4-22 Thread Protector Fluted Barrel 16in Gen 2 S/N UNDER 75000 Black. Weighs in at 1.2LBS it's more rigid and dissipates heat quicker. Removable thread protector for use with your preferred suppressor or muzzle device. A lighter barrel reduces target acquisition time and is the choice of competitive shooters. Specifications for Tippmann Arms M4-22 Thread Protector Fluted Barrel: Manufacturer: Tippmann Arms Color: Black Finish: Parkerized Fabric/Material: Solid 4150 Steel Barrel Profile: Fluted Threads per Inch: 1/2x28 Barrel Twist Rate: 1-16 Weight: 19.2 oz Additional Features: for Gen 2 S/N UNDER 75000 Outer Diameter: 0.74 in Features of Tippmann Arms M4-22 Thread Protector Fluted Barrel More rigid. Rapid heat dissipation. Package Contents: Tippmann Arms M4-22 Thread Protector Fluted Barrel Tippmann Arms A201049: M4-22 Thread Protector Fluted Barrel 16in Gen 2 S/N UNDER 75000 Black