ADAPTER GM-45/BLACKSIDE 578-28 12192 | REAR THREAD ADAPTER Manufacturer Model Number: 12192 Manufacturer: Gemtech Model: Adapter Type: Accessory-Silencer Accessories Item Type: Accessory Finish: Black Shipping Weight: 0.2 Feature: For GM-45 Silencer Feature: Rear Thread Adapter Optic Adjustable Objective: false Optic Reticle Illuminated: false