BARREL S&W M&P 45ACP .578X28 THREADED BARREL Manufacturer Model Number: AC2024 Manufacturer: SilencerCo Model: S&W M&P 45ACP Caliber: 45 ACP Type: Accessory-Barrels Item Type: Accessory Finish: Black Nitride Shipping Weight: 0.3 Feature: Constructed Using 416R SS Feature: Fits S&W M&P 45ACP Pistols Optic Adjustable Objective: false Optic Reticle Illuminated: false