The Nightforce Ring Cap Bubble Levelsreplace the top half of the ring of theNightforce UniMount, Direct Mount andstandard rings. Available with an integralADI mount (ADI sold separately) or as atop half of ring and bubble level only.
Promotional Codes are not applicable to Nightforce products.
Big Book Catalog, Issue:71, Page:282
Sinclair, Issue:5B, Page:212