ProMag Sig Sauer P229 Magazine 12-Round .40/.357
Reliable 12-round magazine for Sig Sauer P229 pistols in .40 S&W or .357 Sig. Heat-treated blued steel construction with durable polymer base and chrome-silicon spring.
Fits: Sig Sauer P229
ProMag Sig Sauer P229 Magazine
This 12-round magazine is purpose-built for the Sig Sauer P229 pistol, chambered in either .40 S&W or .357 Sig. It represents a practical solution for shooters seeking reliable spare magazines or backup capacity.
Construction & Materials
Durable Steel Construction
- Heat-treated blued steel body for corrosion resistance and longevity
- Engineered to withstand the pressures of repeated loading and firing cycles
Polymer Components
- Follower lock-plate and base-plate molded from proprietary DuPont Zytel-based black polymer
- Designed for smooth feeding and reliable operation
Spring System
- Chrome-silicon wire spring, heat-treated for maximum strength and reliability
- Maintains consistent feeding pressure throughout the magazine's service life
Capacity & Compatibility
The 12-round capacity provides a practical balance between firepower and concealability. This magazine works seamlessly with standard Sig Sauer P229 platforms, making it an excellent choice for training, competition, or everyday carry backup.
Why Choose This Magazine
ProMag magazines are known for dependable performance at an accessible price point. This P229 magazine combines proven materials with thoughtful engineering—ideal for shooters who demand reliability without premium pricing.
