Each clamp is 21mm (0.83") in width.
Inside distance between clamps is 69mm (2.717"). Outside distance from clamp to clamp is 111mm (4.370").
Designed to fit Picatinny (MIL-STD-1913) rails.
Proudly engineered and manufactured in the USA.
code:
arc_m10_qd-l_30mm_1.38 ~ arc_m10_qd-l_36mm_1.57