Home / Accessory-Silencer Accessories / Gemtech ADAPTER GM-45/BLACKSIDE 578-28 Sale! Gemtech ADAPTER GM-45/BLACKSIDE 578-28$8500 Original price was: $8500.$8444Current price is: $8444. Only 2 left in stock Gemtech ADAPTER GM-45/BLACKSIDE 578-28 quantity Add to cart SKU: 12192 Category: Accessory-Silencer Accessories Product ID: 33856 Description Description For GM-45 SilencerRear Thread Adapter Related products Sale! Dead Air Armament XENO MOUNT MUZZLE BRAKE 1/2X28 $8900 Original price was: $8900.$8472Current price is: $8472. Gemtech THREAD PROTECTOR 1/2-28 RF # $1800 Gemtech PISTON GM9/MM9/TUNDRA 1/2-28 $8000 Sale! Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH $7495 Original price was: $7495.$7135Current price is: $7135.