CGS Group Piston Features The CGS Piston 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. CGS Group Piston Specifications Model: Piston Finish: Black Nitride Material: 17-4 Stainless Steel Length: 2″ Thread Pattern: M13.5×1 LH tpi Weight: 1.30 oz More Information Condition New in Box Finish Per Color Black Manufacturer CGS Group Manufacturer Part Number CGS-KRK-13.5X1LHBK Model Piston Type Suppressor Accessories UPC 850002123166
