Product Description These 3-lug muzzle devices require a 3-lug mount to attach a suppressor. Other Details Manufacturer: Silencer Co Manufacturer Part Number: AC2605 Additional Feature 1: 3-Lug Male Adapter Additional Feature 2: Fits .45ACP Caliber Guns Adjustable Objective: False Caliber/Gauge: .45 ACP canDropship: True Color: Black Description: .578x28 Dimension: 3-Lug Drilled and Tapped: False Finish: Matte Black Finish Color: Black Finish Type: Black Illuminated Reticle: False Model: 3-Lug NFA Thread Pattern: .578x28 Product Type: .45 ACP Safety: Silencer Adapter Scope Cover Included: False Series: Muzzle Device Similar Items: SUPACC Subcategory: Suppressor Accessories Thread Pattern: .578" x 28 Trigger: Black