Other Details Manufacturer: Silencer Co Manufacturer Part Number: AC855 Additional Feature 1: Harvester Big Bore M18x1.5 TPI Additional Feature 2: .338 CAL Adjustable Objective: False canDropship: True Drilled and Tapped: False Illuminated Reticle: False NFA Thread Pattern: 18x1.5mm RH Product Type: Accessory-Silencer Accessories Scope Cover Included: False