Reliability comes in all shapes and sizes. Duramag (C Products) just so happens to have the perfect magazine for your ultra-light personal defense firearm. LipLock technology keeps rounds secured and in proper alignment. Advanced Geometry Follower; remains level for consistent feeding. T-360 total coating technology covers the entire magazine, inside and out. EverFlex; anti-fatigue spring technology for long life and ultimate reliability. Carbon Steel body.