Promag RUGA29 Ruger 22 LR 10/22, Charger 30Rd Smoke Polycarbonate Drum Made In The USA, The Ruger 10/22 Drum Mag Is constructed Of Impact Resistant Polycarbonate With An Injection Molded Mag Follower And Heat-Treated Chrome Silicone Wire. Caliber: 22 LR Capacity: 30 Finish: Smoke Model: Ruger Material: Polycarbonate Model Fit: 10/22, Charger Brand Fit: Ruger Capacity: 30 Manufacturer: Promag Mfg Number: RUGA29 Model: Ruger