Glockr OEM 42 380 ACP 6rd Magazine Black This is a factory original, drop-free magazine for your Glock. Glock magazines have a hardened steel insert encased in high tech polymer. This polymer coating protects the magazine and prevents deformation, even when dropped from a great height. Capacity: 6 Round Caliber 380 ACP Finish: Black Body Material: Polymer with Steel Insert Base Pad: polymer (with Extended Finger Grip)