Home / Accessory-Silencer Accessories / Gemtech ADAPTER MM9 5/8-24 300BLK View cart “Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28” has been added to your cart. Gemtech ADAPTER MM9 5/8-24 300BLK$7500 Out of stock SKU: 12175 Category: Accessory-Silencer Accessories Product ID: 31234 Description Description Subsonic ammo onlyFixed Threadmount Related products Sale! SilencerCo BRAVO ANCHOR BRAKE 30CAL BLACK $9400 $8606 Sale! Dead Air Armament SANDMAN 5.56 FRONT CAP $6900 $6042 Sale! Gemtech ADAPTER GM-45/BLACKSIDE 1/2-28 $8500 $8444 Sale! Rugged Suppressors TITANIUM FRONT CAP 7.62 $10000 $8715