Field Optics Research FM-215 M-LOK Stackable Arca Rail Mount Adapter

The 4.7" Stackable Arca Rail Mount Adapter for M-LOK's from Field Optics Research keyed alignment allows an unlimited number of sections to be connected end to end. It uses three M-LOK interlock slots for added strength and has two force reaction pins at one end, with the other end open for fast insertion. The mount fits the three most popular tripod Arca plate connection styles—end pin retention, sideways-sliding release pin, and center boss raised island security style heads. It is made in the USA.