The CGS Pistons for the Kraken, MOD9, and Nautilus series silencers allow the user to attach the silencer to any firearm that has barrel threads matching the piston threads. This piston system is also self aligning and the piston itself has a very positive spoke lock to the housing.
Specifications:

Type
Model	Piston
Dimensions
Size
Material	17-4 Stainless Steel
Action
Trigger
Safety
Thread Pattern	1/2"-36 tpi
Finish	Black Nitride
Bolt Type
Hand
Hammer Type
Capacity