Description
ProMag SIG-21 is a detachable 9mm magazine made as a standard replacement for a SIG P938. It holds 10 rounds and uses steel with a blued finish. The magazine springs are precision wound with heat-treated chrome silicon wire, and each step of assembly is checked for consistent quality.
Key details
- Caliber: 9mm
- Capacity: 10 rounds
- Finish: blued steel
- Fits: SIG P938
Materials and build
- Precision-wound, heat-treated chrome silicon wire magazine springs
- Assembly process checked and double checked
