Wilcox L4 G11 Night Vision Goggle Mount. The Wilcox L4 G11 Night Vision Goggle Mount are currently under contract with the U. The mount has several points of adjustment for proper fit and eye relief. It utilizes a force to overcome flip mechanism to stow the Night Vision Goggles when not in use. A horn interface provides firm attachment of the AN/PVS-7 and AN/PVS-14 with currently fielded AN/PVS-14 arm, to a variety of combat helmets. Wilcox L4 G11 Night Vision Goggle Mount Features. Horn interface securely locks NVG into place. Force to overcome flip mechanism. Maintains a very low profile on the helmet.