Compatible 80 Percent Arms, Modulus Arms 80% AR-15 Lower Jig "TiN" Drill Bit Kit Replacement End Mills

Replacement End Mills

In addition "Zrn" Coating specifically for aluminum adds hardness and lubricity to the cutting edge of the end mill

Our High Performance Upgrade end mill has been tested and is completely compatible with the jigs listed above

High performance flutes eliminating vibration and harmonics

Compatible 80 Percent Arms, Modulus Arms 80% AR-15 Lower Jig "TiN" Drill Bit Kit Replacement End MillsOur Kits are a SIGNIFICANT UPGRADE to any kits on the market. Upgrade Kit is compatible with Modulus Arms, 80 Percent Arms 80% AR15 AR10 . 308 Lower Receiver and many more Jigs. "TiN" Coated high speed steel drill bits, custom cut to our specifications. Replacement End Mills Replacement Drill Bits 80 Percent Arms "Easy Jig" Jig Tooling Kit How to Build AR 15 & AR 10 . 308 80% Lower Receiver Video's & Instruction Manuals