This polymer selector plate fits the original RM4 ERG mechbox, but it does not fit current ambidextrous models! It appears on RM4 mechbox diagrams as part 328. This will not fit rifles equipped with ambidextrous selector switches! This will only fit older, pre-ambi RM4/VM4 models with a single selector switch.

Weight .15 lbs
Dimensions 2.5 × 2 × 1 in