This 20" 6MM ARC barrel is machined from 416 Stainless Steel with a QPQ finish. Ballistic Advantage's Premium Black Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.

Features :

• Hardened 416R Stainless Steel
• DMR Profile
• QPQ Corrosion Resistant Finish
• "1:7" Rifling"
• Rifle Length Gas System
• 5/8x24 Threaded