THE A.R.M.S. #40L is a low profile spring-loaded, dual-range rear flip-up sight for use with or without optics. The unique design of the spring loaded rear sight ensures constant in battery action and repeat zero.
A fast release lever holds the sight in the locked down position, which prevents the accidental engagement of the sight. The sight has military horizon line notch, 500-600 meter sight and its windage adjustments of .75 MOA. Made in the USA.