- Constructed of stiff metal encased in GLOCK polymer
- Viewing windows for each cartridge for visual confirmation
- GLOCK factory replacement magazines
- Double-stack design
This is an OEM factory new/original drop-free 10-round .45ACP magazine for your GLOCK G21. Glock magazines have a hardened steel insert encased in high tech polymer. This polymer coating protects the magazine & prevents deformation, even when dropped from a great height.