Proof Research 128657 AR-Style Barrel 6mm ARC 16 AR Platform 416R Stainless Steel Carbon Fiber Rifle Length .750 Gas Journal

Color: Black - Material: 416R Stainless Steel/Carbon Fiber - Length: 20 Inches - Caliber: 22 Nosler - Twist: 1:8 - Threads: 1/2-28 - Contour: Medium - Chrome Lined: No - Gas Block Diameter: 0.75 Inches - Gas System Length: CAMGAS - M4 Feed Ramps: Yes - Up to 64% lighter than traditional steel barrels of similar contour - Match-grade accuracy - Improved heat dissipation for cooler and longer lasting barrels - No point-of-impact shift during high-volume fire - Reduced harmonic barrel vibration - Unprecedented durability - CAMGAS system improves reliability while smoothing operation and recoil impulse