Stocks for Mossberg JM 940

A stock sets length of pull and cheek weld height -- the two dimensions that determine whether the mount is the same every time or requires small adjustments on the way to the shoulder. The JM 940 is the updated competition semi-auto in Mossberg's JM signature line with an improved gas system. Its stock geometry may differ from the JM 930; confirm JM 940-specific compatibility on the individual product page before ordering.