Features: High strength, reinforced DuPont Polymer construction Double injection molding rubber base plate Type: Gas blowback rifle magazine Capacity: 38 rounds Power Source: Green gas KWA / KSC derived proprietary gas system Over molded rubberized base plate, improves grip when reloading and acts as monopod when shooting prone Base plate can be replaced for Magpul Ranger Plates Textured surface for a more positive grip during reloading Compatible with the PTS MML MATEN or similar .308 series GBBR