Compatible Easy Jig 80% AR15 Lower Receiver 1/4" "ZrN
Compatible SIGNIFICANT UPGRADE for Modulus Arms, 80 Percent Arms, and will work with most lower receiver jigs. Our End Mills are"ZrN" coated for hardness and lubricity and have a unique geometry extending tool life. High performance flutes eliminates vibration and harmonics.This design allows heavy chip load per tooth, for maximum material removal in aluminum.