FIVE-SEVEN MAG 5.7MM 20RD MK3 Manufacturer Model Number: 20-100682 Manufacturer: FN Model: Five-Seven Magazine Caliber: 5.7 x 28mm Type: Accessory-Magazines Item Type: Accessory Firearm / Accessory Capacity: 20 Finish: Black Polymer Shipping Weight: 0.2 Feature: Fits Five-Seven MRD MK3 Optic Adjustable Objective: false Optic Reticle Illuminated: false