Compatible Upgrade Optimus Defense 80% AR15/AR10/.308 Lower Receiver Jig Tooling Kit

// Our jig tooling kits are a SIGNIFICANT UPGRADE  to other tooling kits on the market. Compatible Upgrade for Optimus Defense AR/15 80% Lower Receiver Jig Tooling Kit AGT's proprietary 3rd Generation "ZrN" coated solid carbide end mills. All end mills have a unique geometry, extending tool life. Highly polished flute gullet improving chip evacuation. High performance flutes eliminating vibration and harmonics.This design allows heavy chip load per tooth, for maximum material removal in aluminum. "ZrN"coating for hardness and lubricity.What is"ZrN' Zirconium Nitride coating? CLICK HERE  to see what can it do for you! Replacement End MillsReplacement Drill BitsReplacement Drill Bit Kit How to Build AR-15 & AR-10 .308 80% Lower Receiver Video's & Instruction Manual