Upgrade the reliability and performance of your Sig Sauer MPX with Springer Precision Extra Power Mag Springs designed specifically for THRiL magazines. These precision-engineered replacement springs deliver consistent feeding and enhanced functionality, making them an essential accessory for competitive shooters, tactical users, and enthusiasts seeking dependable magazine performance.
Key Features
- Extra-power design optimized for 2022 THRiL MPX magazines and compatible new-style OEM Sig Sauer magazines
- Constructed from high-quality stainless steel for durability and long service life
- Provides reliable spring tension for smooth cartridge feeding and improved last-round slide lockback
- Direct drop-in replacement that maintains the integrity of your existing magazine assembly








