Griffin Armament Revolution, Griffin Gar1228 Piston 1-2×28
This revolution piston is required for use with the revolution 9 silencer and for the optimus in the pistol configuration.It ships with a 1/2×28 piston and is constructed of 17-4 stainless steel.
Finish: Brass
Model: Revolution
Material: 17-4 Stainless Steel
Thread Pattern: 1/2″-28 tpi