581 M18 Spirit Level Radially Adjustable by Gehmann

Key Features:

• 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