Optimus Defense Manual Mill Tool Kit includes all necessary tools to make a complete AR-15 Lower from our 80% Lower
- Good Quality High Speed Steel tools.
- Correct size and length tools for easy manual machining.
- Precision ground shaft for accurately locating the Lower's take-down pin hole.
- 7/16” Endmill w/ 3/8” shank
- 5/16” Endmill w/ 3/8” shank
- 3/8” stub length drill bit
- 5/32” stub length drill bit
- 1/4” precision ground shaft