PROMAG AR-308 308WIN 20RD MAG BLACK POLYMER MAGAZINE Manufacturer Model Number: DPM-A3 Manufacturer: ProMag Model: AR-10 Magazine Caliber: 308 Win Type: Accessory-Magazines Item Type: Accessory Firearm / Accessory Capacity: 20 rd. Shipping Weight: 0.4 Feature: Black Polymer Magazine Feature: LR-308 and SR-25 Pattern Rifle Optic Adjustable Objective: false Optic Reticle Illuminated: false