Manufacturer Model Number: AC1757 Manufacturer: SilencerCo Model: Glock 23 Caliber: 40 S&W Type: Accessory-Barrels Item Type: Accessory Finish: Black Nitride Shipping Weight: 0.25 Feature: Constructed Using 416R SS Feature: Compatible w/ Gen3/Gen4 Glocks Optic Adjustable Objective: false Optic Reticle Illuminated: false