Walther PPQ .22 Magblock 10/12 (.22LR) 

This Magblock fits the Walther PPQ .22 12 round .22LR magazines and will limit them to 10 rounds.  Easily installed in seconds by replacing the locking plate. It is held in place with spring tension alone or can be glued or epoxied if desired.

-Simplest way to make Walther PPQ .22 10/12 magazines.

-No modification to the magazine is required.

-Lightweight and will not interfere with magazine reliability.