Product Description SPECIFICATIONS MATERIAL: NYLON POLYMER CAPACITY: 3,500 ROUNDS CALIBER: 6 MM COMPATIBILITY: MOST AK STYLE AEGS COLOR: BLACK MANUFACTURER: SENTINEL GEARS FEATURES DURABLE LIGHTWEIGHT POLYMER CONSTRUCTION SOUND CONTROLLED AUTO-WINDING TECHNOLOGY. HIGH-CAPACITY MAGAZINE HOLDS 3,500 ROUNDS OF BBS. COMPATIBLE WITH MOST AK STYLE AEGS WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov/product Customer Reviews