This Revolution Piston is required for use with the Revolution 9 silencer and for the Optimus in the pistol configuration. It ships with a 1/2x28 piston and is constructed of 17-4 stainless steel.
Determined at checkout.
We ship our products nationwide and some products will NOT be legal in every state.
Every order is reviewed to be compliant with all federal, state and local laws.
Orders can be subject to cancellation and service fees if found to be against the law.
