These CHF barrels are extremely durable with a 20,000+ round service life and are turned to ST's New Optimum barrel Profile. This New profile is lighter than government profile but beefier than a lightweight profile, it's an "Optimum" profile. It weighs 26.4oz with M4 Barrel extension and no FSB on the 16" Barrel. The barrels have a .750" gas block seat with a properly sized gas port and the muzzle is threaded perfectly concentric to the Bore with 1/2x28 threads. These CHF barrels are made to the Mil-Spec for the M249 SAW. The Cold Hammer Forging process Work Hardens the steel around a rifled mandrel, which creates the lands and grooves. These barrels are chambered in 5.56 NATO, with a 1/7 Twist Rate. The barrel blanks are the correct Certified CMV material and they are also Hard Chrome lined to the M249 SAW Mil-Spec, which is almost twice as thick as the Hard Chrome on a Mil-Spec M4. The End Result is a Rifle that can be Run Hard Day after Day! Each barrel is HPT and MPI. They have Mil-Spec M4 barrel extensions, Mil-Spec Phosphate finish on the outside (under the front sight base as well).
Features and Specifications:
- 5.56mm NATO Chamber (accepts .223 Remington)
- 16" Cold hammer forged barrel
- 1:7" Twist rate
- Mid-length gas system port
- .750" Gas block seat
- Threaded concentric with 1/2"x28 Thread pitch
- Chrome lined
- HPT and MPI
- M4 barrel extensions
- Mil-spec phosphate finish on the outside (Black)
- 20,000+ round service life
- Weighs 26.4 oz
