Home / Accessory-Silencer Accessories / Gemtech ADAPTER GM-45/BLACKSIDE 1/2-28 View cart “Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH” has been added to your cart. Sale! Gemtech ADAPTER GM-45/BLACKSIDE 1/2-28$8500 $8444 Out of stock SKU: 12196 Category: Accessory-Silencer Accessories Product ID: 26726 Description Description For GM-45 SilencerRear Thread Adapter Related products Sale! Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH $7495 $7135 SilencerCo DELTA 1/2X28 THREAD SPACER $1900 Sale! SIG SAUER MUZZLE BRK CL 7.62MM 90 DEG $17999 $16957 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 9MM 1/2X28 $7495 $7135