Fits M&P Shield 9mm and 9mm 2.0.

For use with .40 S&W 1.0 and 2.0 use factory spring

Not compatible with Shield 9mm EZ

M&P Shield mag extension adds 2 rounds to both the factory 7 and 8rd magazines

Uses factory sleeve when used with the 8rd magazine

Tool free, easy installation

Custom engineered spring

Optimal ergonomics and texture for recoil control

Made in USA

California Compliant

Uses factory follower & body (Not Included)

Adds 1rd and requires use of factory spring for Shield .40 S&W