MAGAZINE AR-556 300BLK 30RD 90526 | METAL MAGAZINE Manufacturer Model Number: 90526 Manufacturer: Ruger Model: 300 Blackout Magazine Caliber: 300 AAC Blackout Type: Accessory-Magazines Item Type: Accessory Firearm / Accessory Capacity: 30 Shipping Weight: 0.35 Feature: Magazine for 300 AAC Blackout Optic Adjustable Objective: false Optic Reticle Illuminated: false