Other Details Manufacturer: Tapco Manufacturer Part Number: TAP22005 Additional Feature 1: For any 1/2x28 9mm Pistols Adjustable Objective: False Caliber/Gauge: 9mm canDropship: True Drilled and Tapped: False Finish: Black Nitride Finish Type: Stainless Steel Illuminated Reticle: False Model: Diamond NFA Thread Pattern: 1/2x28 Product Type: Accessory-Muzzle Brakes Scope Cover Included: False Thread Pattern: 1/2"x28