581 M.18 spirit level - radially adjustable
581 M.18 spirit level - radially adjustable
- M.18 medium-to-slow bubble that runs through twin markers
- Screws into the foresight and is held in place by a lock-collar - a C-spanner is provided to lock it in position
- Once in your position on the rifle whatever angle of cant you normally use can be set by simply rotating the whole bubble on its ratchet system
- A friction collar holds your setting without need of more tools
- Laser engraved degrees marked for reference
- Color: black