5 spacing for blocks with .400" .425" .450" .470" and .500" center to center
Includes Jig , Hardened Centering Screw and Custom Hardened Drill bushing
5/32" drill bit required.
7075 Billet T6 Aluminum
5 position flats for Vice mounted drilling to keep barrel stable
- Numbers on Jig face the front (towards muzzle)
- Spacing to be used goes on DIMPLE side with drill bushing (opposite gas port)
- If using one dimple only, always dimple under gas port
