Compatible Upgrade M1 Machining Lower Receiver Jig "TiN" Coated Drill Bit Kit
Our jig tooling kits are a SIGNIFICANT UPGRADE to other tooling kits on the Market.
"TiN" Coated high speed steel drill bits, custom cut to our specifications.
Upgrade is compatible with M1 Machining and many more lower receiver jig drill bit kits.
Replacement End Mills
Replacement Drill Bits
M1 Machining Lower Receiver Jig Tooling Kit

