Our new Match Grade M4 Barrels are even more reliable now with the addition of our new Nickel Boron Treated Barrel Extensions. 16" M4 Profile with QPQ Treatment gives the highest longevity and corrosion resistance available.
Gas Length: Carbine
Material: 4150 CMV
Finish: QPQ Melonite
Extension: M4 Nickel Boron (enhanced reliability)