Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID 9/16-24 You cannot add "Gemtech PISTON GM9/MM9/TUNDRA 1/2-28" to the cart because the product is out of stock. Gemtech PISTON GM-45 LID 9/16-24$14800 Out of stock SKU: 12187 Category: Accessory-Silencer Accessories Product ID: 31204 Description Description GM-45/Blackside Piston Related products Gemtech THREAD PROTECTOR 1/2-28 RF $1800 SilencerCo O-RING BOOSTER PACK $900 Sale! Rugged Suppressors R3 FLASH HIDER 3/4X24 $10000 $8715 Sale! Dead Air Armament WOLVERINE INSERT 15MM RH HK $8900 $7865