High-Performance Eemann Tech Spring for MBX STI 126mm Magazines

The Eemann Tech Magazine Spring is designed specifically for MBX 126mm magazine tubes used in STI pistols.

11 coils
Made of steel, with thermic treatment for optimal performance and quality
Varied, progressive structure provides constant pressure with significantly enhanced spring performance and longevity
Constructed from steel according to UNE10270-1-SM standards, with thermic treatment
Designed for non-lock competition followers

No fitting is required, and installation is instant in most cases. However, some pistols may vary in production or be pre-modified, which might necessitate the assistance of a certified gunsmith for installation.