Mossberg FLEX System Shotguns - Manual (Page 10)

PART N0. 100848 REV. A 10
c) With an open palm strike the stock/pistol grip as shown to loosen it
from the adapter (Figs. 19a &19b).
Fig. 19a
Fig. 19b
d) Pull buttstock/pistol grip from the adapter (Fig. 20).
Fig. 20